{"title":"-20°C to -30°C","description":null,"products":[{"product_id":"mont-spindrift-xt-1000-sleeping-bag-25-c","title":"MONT Spindrift XT 1000 Sleeping Bag -25°C","description":"\u003cp\u003eThe MONT Spindrift XT 1000 is purpose-built for severe winters, polar environments and high altitude environments. Rated to -25°C, this sleeping bag delivers reliable thermal performance across Standard, Women's, and XL configurations. Engineered for \u003cmeta charset=\"utf-8\"\u003esevere Scottish winters, backcountry expeditions, high-altitude mountaineering, and polar ventures, it combines technical insulation with the robustness required for extreme conditions where performance margins are non-negotiable.\u003c\/p\u003e\n\u003cp\u003eComfort Temperature Rating for warm sleepers: -25°C, \u003cmeta charset=\"utf-8\"\u003ecold sleepers: -19°C. These ratings suggest the average user will be comfortable at or around those temperatures. These temperature ratings assume you're using an appropriately insulated sleeping mat, you are well hydrated, well fed and dry.\u003c\/p\u003e\n\u003ch4\u003eStandout Features\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eHYDRONAUTE XT SHELL\u003c\/strong\u003e: Comfort in the Extreme: Using advanced monolithic PU membrane technology, Hydronaute XT fabric is completely waterproof, totally windproof \u0026amp; highly breathable. Guaranteed to maintain greater warmth \u0026amp; comfort than coated fabrics, Hydronaute XT is the best protection for down sleeping bags \u0026amp; clothing in cold to extreme conditions. Waterproof to 20,000mm, highly breathable 48,000g\/m2\/24hrs: If not removed promptly, water vapour from your body will gather on the down \u0026amp; reduce its ability to trap warmth. Hydronaute XT fabric expels 20L of water vapour per square metre per 24 hours for drier down, greater loft \u0026amp; maximum warmth. Warmth Sealed In: With a 100% windproof rating, even Arctic blasts will not penetrate Hydronaute XT fabric, keeping warm air trapped inside.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRADIAL ARC BAFFLE\u003c\/strong\u003e: The Radial Arc Baffle System is a significant design innovation that improves the thermal efficiency of a Mont sleeping bag. Radial Arc baffles curve naturally around your body rather than compressing the down around your body.\u003cbr\u003eWhen a down baffle (chamber) is bent, ripples in the fabric occur, which will create cold spots and compress down. The radial Arc Baffle System reduces distortion and increases warmth and loft\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCORDLESS COLLAR SYSTEM\u003c\/strong\u003e: A cordless Collar System provides superior insulation around your shoulders and neck without the need for uncomfortable and fiddly draw cords. The Cordless Collar can be wrapped snugly around your neck and shoulders, or in warmer conditions, can be secured inside the sleeping bag to increase ventilation. The Cordless Collar is a unique Mont design and can be found on Brindabella, Spindrift and Expedition 8000 sleeping bags.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTUCK STITCHING\u003c\/strong\u003e: Tuck stitching is a construction method that conceals the stitch inside the sleeping bag, thereby protecting it from abrasion and snagging. This is in comparison to top-stitched seams, where each stitch is exposed, which is commonly found in other sleeping bag brands. Tuck-stitched seams are also more water-resistant than top-stitched seams, again because the seam is concealed internally. Tuck stitching attaches the lock-knit baffle to a small fold in the shell material.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTOASTER POCKET\u003c\/strong\u003e: is for slow-release, air-activated heat packs: your toes and feet will never be cold again. \u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/BDQupEnAxN4?si=E1LQH3twqgIs-qDL\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMore Help?\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFor further assistance on choosing your down sleeping bag, we have an article explaining fill power, the pros and cons of down over synthetic insulation and more info on caring for your bag available to view \u003cspan\u003ehere: \u003c\/span\u003e\u003ca href=\"https:\/\/rockrun.com\/blogs\/the-flash-rock-run-blog\/a-guide-to-down-sleeping-bags-buying-guide\" title=\"Article: A guide to down sleeping bags...down explained\"\u003eA Guide to Down Sleeping Bags\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMummy shape with boxfoot for maximum efficiency\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDown distribution: 55% canopy 45% base\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCross-block baffles on the torso prevent downshift between the canopy \u0026amp; base\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eRadial Arc Baffle System on horizontal baffles maximises baffle loft height \u0026amp; warmth\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDifferential cut reduces compression \u0026amp; cold spots\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBox-walled chambers for warmth\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTwin interlocking down-filled draught tubes along zip retain heat\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDurable laminated Nylon anti-snag shield along zip\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eContoured hood with down-filled hood facing\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eUnique Cordless Collar System wraps around shoulders without the need for a fiddly and uncomfortable drawcords\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDrawcords across chest and hood drawcord at top of hood\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eRecessed drawcords provide comfortable, warmth-retaining closures\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eToaster Pocket in boxfoot for air-activated heat pack\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSewn with hydrophobic Epic thread to prevent moisture from wicking along seams and inside the shell\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTuck stitched seams for superior seam strength, seam durability \u0026amp; water resistance\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFull-length YKK side zip with dual sliders\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eYKK Anti-snag slider cover\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eIncludes siliconised-Nylon mechanical advantage compression stuff sack \u0026amp; 50L \/ 3,051 cu.in polyester storage sack with printed care \u0026amp; washing instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSeason Rating: 4-Season\u003c\/li\u003e\n\u003cli\u003eMaximum User Height:  Women's: 170cm \/ Regular: 185cm \/ Long: 200cm\u003c\/li\u003e\n\u003cli\u003eCold Sleeper Comfort Temp: -19°C\u003c\/li\u003e\n\u003cli\u003eWarm Sleeper Comfort Temp: -25°C\u003cmeta charset=\"utf-8\"\u003e\n\u003c\/li\u003e\n\u003cli\u003eDown treatment: Water-resistant DWR Loft treatment\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWaterhead: 20,000mm +\u003c\/li\u003e\n\u003cli\u003eMoisture Vapour Transmission Rate (Breathability): 48,000g\/m\u003cmeta charset=\"utf-8\"\u003e \u003csup\u003e2\u003c\/sup\u003e\u003cspan\u003e\u003c\/span\u003e\/24hrs\u003c\/li\u003e\n\u003cli\u003eMax Shoulder Circumference: \u003cmeta charset=\"utf-8\"\u003eWomen's: 155cm \/ Regular: 160cm \/ Long: 170cm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eInsulated collar: Yes\u003c\/li\u003e\n\u003cli\u003eShell Fabric: Japanese-made Hydronaute 2-layer XT™ 12D PU laminated\u003c\/li\u003e\n\u003cli\u003eLining: Ultralight silk-touch 15D downproof Nylon\u003c\/li\u003e\n\u003cli\u003eFilling: Premium white duck down\u003c\/li\u003e\n\u003cli\u003eFill power: 900+\u003c\/li\u003e\n\u003cli\u003eWeight: \u003cmeta charset=\"utf-8\"\u003eWomen's: 1565g \/ Regular: 11630g \/ Long: 1785g\u003c\/li\u003e\n\u003cli\u003eFill Weight: \u003cmeta charset=\"utf-8\"\u003eWomen's: 1000g \/ Regular: 1000g \/ Long: 1100g\u003c\/li\u003e\n\u003cli\u003eCompression Size: 23x30cm(women's) \/ 23x30cm(standard) \/ 23x30cm(Long)\u003c\/li\u003e\n\u003cli\u003eZip: Women's: Right \/ Standard\/Long: Left\u003c\/li\u003e\n\u003cli\u003eZip Configuration: Side \u0026amp; Foot zips. YKK brand zips, dual sliders on side zip\u003c\/li\u003e\n\u003cli\u003eColour: Charcoal\/Fiesta Red\/Black\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCut: Mummy\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e","brand":"MONT","offers":[{"title":"Regular","offer_id":56360407073141,"sku":"SS-DB-MBSXT1000-REG","price":789.0,"currency_code":"GBP","in_stock":true},{"title":"Long","offer_id":56360407105909,"sku":"SS-DB-MBSXT1000-LONG","price":819.0,"currency_code":"GBP","in_stock":true},{"title":"Womens","offer_id":56360407138677,"sku":"SS-DB-MBSXT1000-WMN","price":789.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1554\/2851\/files\/mont-spindrift-xt-850-13-to-19-c-down-sleeping-bag-sleeping-bags-spindrift-xt-850-13-to-19-c-down-sleeping-bag-13631737593992_0e51b91e-c458-40bb-a41a-b31a7304b563.jpg?v=1763461635"},{"product_id":"mont-expedition-xt-8000-sleeping-bag-40-c","title":"MONT Expedition XT 8000 Sleeping Bag -40°C","description":"\u003cp\u003eEngineered for summit pushes on the world’s highest and harshest mountains, the Mont Expedition 8000 XT Sleeping Bag is purpose-built for elite alpinists and polar explorers who demand absolute reliability in the coldest environments on earth. Designed with a generous “expedition fit,” they accommodate layered down clothing for high-altitude bivouacs and extended time in extreme conditions, with sizes available in Small\/Medium and Medium\/Large.\u003c\/p\u003e\n\u003cp\u003eRated to an uncompromising -40°C, these bags are crafted to deliver life-preserving warmth when conditions turn truly hostile. Every detail is optimised for performance in severe cold: Hydronaute XT laminated membrane fabric shields against spindrift and external moisture while efficiently venting internal vapour; vertical chest baffles stabilise insulation to eliminate cold spots; and a close-fitting, down-filled hood with Hydronaute XT lining guards your head and keeps critical insulation dry.\u003c\/p\u003e\n\u003cp\u003eA spacious foot-\u003cmeta charset=\"utf-8\"\u003ebox design with Hydronaute XT lining ensures your down stays protected from snow-covered socks or booties, while Mont’s innovative Cordless Collar System wraps the shoulders in exceptional warmth without the discomfort of traditional drawcords. Interlocking down-filled draught tubes run the length of the zip, sealing out the cold and locking in heat when the temperature plummets.\u003c\/p\u003e\n\u003cp\u003eWhen you’re pushing toward the summit or riding out a storm at altitude, the Expedition 8000 XT is built to keep you warm, dry and alive.\u003c\/p\u003e\n\u003cp\u003eComfort Temperature Rating for warm sleepers: -40°C, \u003cmeta charset=\"utf-8\"\u003ecold sleepers: -30°C. These ratings suggest the average user will be comfortable at or around those temperatures. These temperature ratings assume you're using an appropriately insulated sleeping mat, you are well hydrated, well fed and dry.\u003c\/p\u003e\n\u003ch4\u003eStandout Features\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eHYDRONAUTE XT SHELL\u003c\/strong\u003e: Comfort in the Extreme: Using advanced monolithic PU membrane technology, Hydronaute XT fabric is completely waterproof, totally windproof \u0026amp; highly breathable. Guaranteed to maintain greater warmth \u0026amp; comfort than coated fabrics, Hydronaute XT is the best protection for down sleeping bags \u0026amp; clothing in cold to extreme conditions. Waterproof to 20,000mm, highly breathable 48,000g\/m2\/24hrs: If not removed promptly, water vapour from your body will gather on the down \u0026amp; reduce its ability to trap warmth. Hydronaute XT fabric expels 20L of water vapour per square metre per 24 hours for drier down, greater loft \u0026amp; maximum warmth. Warmth Sealed In: With a 100% windproof rating, even Arctic blasts will not penetrate Hydronaute XT fabric, keeping warm air trapped inside.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRADIAL ARC BAFFLE\u003c\/strong\u003e: The Radial Arc Baffle System is a significant design innovation that improves the thermal efficiency of a Mont sleeping bag. Radial Arc baffles curve naturally around your body rather than compressing the down around your body.\u003cbr\u003eWhen a down baffle (chamber) is bent, ripples in the fabric occur, which will create cold spots and compress down. The radial Arc Baffle System reduces distortion and increases warmth and loft\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCORDLESS COLLAR SYSTEM\u003c\/strong\u003e: A cordless Collar System provides superior insulation around your shoulders and neck without the need for uncomfortable and fiddly draw cords. The Cordless Collar can be wrapped snugly around your neck and shoulders, or in warmer conditions, can be secured inside the sleeping bag to increase ventilation. The Cordless Collar is a unique Mont design and can be found on Brindabella, Spindrift and Expedition 8000 sleeping bags.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTUCK STITCHING\u003c\/strong\u003e: Tuck stitching is a construction method that conceals the stitch inside the sleeping bag, thereby protecting it from abrasion and snagging. This is in comparison to top-stitched seams, where each stitch is exposed, which is commonly found in other sleeping bag brands. Tuck-stitched seams are also more water-resistant than top-stitched seams, again because the seam is concealed internally. Tuck stitching attaches the lock-knit baffle to a small fold in the shell material.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTOASTER POCKET\u003c\/strong\u003e: is for slow-release, air-activated heat packs: your toes and feet will never be cold again. \u003c\/p\u003e\n\u003cp\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/BDQupEnAxN4?si=E1LQH3twqgIs-qDL\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMore Help?\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFor further assistance on choosing your down sleeping bag, we have an article explaining fill power, the pros and cons of down over synthetic insulation and more info on caring for your bag available to view \u003cspan\u003ehere: \u003c\/span\u003e\u003ca title=\"Article: A guide to down sleeping bags...down explained\" href=\"https:\/\/rockrun.com\/blogs\/the-flash-rock-run-blog\/a-guide-to-down-sleeping-bags-buying-guide\"\u003eA Guide to Down Sleeping Bags\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDown distribution: 55% canopy 45% base\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLarge boxfoot section accommodates the wearing of inner boots or down booties\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCross block baffles on torso prevent down shift between canopy \u0026amp; base\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eRadial Arc Baffle System on horizontal baffles maximises baffle loft height \u0026amp; warmth\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDifferential cut reduces compression \u0026amp; cold spots\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBox walled chambers for warmth\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTwin interlocking down-filled draught tubes along zip retain heat\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDurable laminated Nylon anti-snag shield along zip\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eContoured hood with down-filled muff\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eUnique Cordless Collar System wraps efficiently around shoulders without the need for fiddly and uncomfortable drawcords\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDrawcords across chest and at top of hood\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eRecessed drawcords provide comfortable, warmth retaining closures\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTuck stitched seams: a construction method that conceals the stitch inside the sleeping bag thereby protecting it from abrasion and snagging. Tuck stitched seams are also more water resistant than top-stitched seams\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSewn with hydrophobic Epic thread to prevent moisture from wicking along seams and inside the shell\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eToaster Pocket in boxfoot for air-activated heat pack\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFull length YKK side zip with dual sliders\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eYKK Anti-snag slider cover\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eIncludes siliconised-Nylon mechanical advantage compression stuff sack \u0026amp; 50L \/ 3,051cu.in polyester storage sack with printed care \u0026amp; washing instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIntended use: Expedition, Alpine\u003c\/li\u003e\n\u003cli\u003eSeason Rating: 4-Season\u003c\/li\u003e\n\u003cli\u003eMaximum User Height:  S\/M: 185cm \/ M\/L: 200cm\u003c\/li\u003e\n\u003cli\u003eCold Sleeper Comfort Temp: -30°C\u003c\/li\u003e\n\u003cli\u003eWarm Sleeper Comfort Temp: -40°C\u003cmeta charset=\"utf-8\"\u003e\n\u003c\/li\u003e\n\u003cli\u003eDown treatment: Water-resistant DWR Loft treatment\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWaterhead: 20,000mm +\u003c\/li\u003e\n\u003cli\u003eMoisture Vapour Transmission Rate (Breathability): 48,000g\/m\u003cmeta charset=\"utf-8\"\u003e \u003csup\u003e2\u003c\/sup\u003e\u003cspan\u003e\u003c\/span\u003e\/24hrs\u003c\/li\u003e\n\u003cli\u003eMax Shoulder Circumference: \u003cmeta charset=\"utf-8\"\u003eWomen's: 155cm \/ Regular: 160cm \/ Long: 170cm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eInsulated collar: Yes\u003c\/li\u003e\n\u003cli\u003eShell Fabric: Japanese-made Hydronaute 2-layer XT™ 12D PU laminated\u003c\/li\u003e\n\u003cli\u003eLining: Ultralight silk-touch 15D downproof Nylon\u003c\/li\u003e\n\u003cli\u003eFilling: Premium white duck down\u003c\/li\u003e\n\u003cli\u003eFill power: 900+\u003c\/li\u003e\n\u003cli\u003eWeight: \u003cmeta charset=\"utf-8\"\u003eWomen's: 1565g \/ Regular: 11630g \/ Long: 1785g\u003c\/li\u003e\n\u003cli\u003eFill Weight: \u003cmeta charset=\"utf-8\"\u003eWomen's: 1000g \/ Regular: 1000g \/ Long: 1100g\u003c\/li\u003e\n\u003cli\u003eCompression Size: 23x30cm(women's) \/ 23x30cm(standard) \/ 23x30cm(Long)\u003c\/li\u003e\n\u003cli\u003eZip: Women's: Right \/ Standard\/Long: Left\u003c\/li\u003e\n\u003cli\u003eZip Configuration: Side \u0026amp; Foot zips. YKK brand zips, dual sliders on side zip\u003c\/li\u003e\n\u003cli\u003eColour: Turmeric\/Fiesta Red\/Black\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCut: Mummy\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e","brand":"MONT","offers":[{"title":"S\/M","offer_id":56360604959093,"sku":"SS-DB-MEXPXT8000-S\/M","price":899.0,"currency_code":"GBP","in_stock":true},{"title":"M\/L","offer_id":56360604991861,"sku":"SS-DB-MEXPXT8000-M\/L","price":949.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1554\/2851\/files\/mont-expedition-8000-xt-30-to-40-c-down-sleeping-bag-small-medium-left-zip-turmeric-sleeping-bags-expedition-8000-xt-30-to-40-c-mummy-down-sleeping-bag-10-15-04l-22455799414933_1_29ae.jpg?v=1763465190"},{"product_id":"thermarestpolar-ranger-20f-30c-down-sleeping-bag","title":"Thermarest Polar Ranger -20F\/-30C","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e\u003cstrong\u003eDesigned in partnership with renowned polar explorer Eric Larsen, the Polar Ranger Down Sleeping Bag is built to make the coldest places on earth habitable.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e Previously a recipient of Backpacker Magazine’s Editor’s Choice Award, the lightest and most feature-rich bag in its class just got better. It utilizes cutting edge box-baffled construction and is filled with highly compressible, PFC-free 800-fill hydrophobic down. This premium down maintains its loft and warmth longer, even in the challenging conditions of extended expedition use in the arctic cold. The ultralight shell and soft liner are made from planet-friendly PFAS-free 100% recycled nylon. A unique snorkel hood with a magnetic closure and synthetic fill helps seal in warmth while routing exhaled moisture away from the bag to preserve loft. Drafts are kept at bay by extensive, overstuffed draft tubes, while a pair of side vents allows for custom ventilation and frees your arms if you want to access gear without exiting your bag. Other premium performance features include an insulated Toe-asis™ foot-warming pocket, an interior stash pocket, external loops for attaching a quilt or blanket for more warmth, and an anti-snag YKK® zipper.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003eFeatures\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e800-Fill Hydrophobic Down:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e800-fill, water-resistant down provides excellent loft, warmth and compression for great packability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecycled Shell \u0026amp; Liner:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ePFAS-free, 100% recycled fabrics are eco-friendly while being lightweight, soft and durable; anti-snag YKK zipper ensures easy entries and exits and prevents tears.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResponsible Down Standard:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRDS certification ensures the waterfowl in the down supply chain are treated humanely.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull-Featured Snorkel Hood:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eShorter, stiffer snorkel features condensation-resistant synthetic insulation, allows for easy breathing and ventilates exhaled moisture; magnetic closure keeps cross-drafts at bay and eases entry and exit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSide Vents:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSide vents zip open for external arm use and allow customizable temperature control. Overlapping draft tubes prevent cold spots when closed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefined Fit:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTested and perfected, added width and precise down distribution achieve optimal thermal efficiency and comfort.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eToe-asis™ Foot Warmer Pocket:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRapidly heat cold feet with a baffled, ergonomic and insulated pocket in the footbox that helps concentrate warmth.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMore Features You’ll Love:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCinchable draft collar, YKK® anti-snag zipper, interior stash pocket, overstuffed draft tubes, external quilt loops, draft collar.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCompression sack and storage sack included.\u003c\/p\u003e\n\u003cp\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/seD6kHU85NU?si=1RJcNPO3RqQIvlX2\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch4\u003eRelevant Article\u003c\/h4\u003e\n\u003cp\u003e\u003ca title=\"A Guide to Down Sleeping Bags\" href=\"https:\/\/rockrun.com\/blogs\/the-flash-rock-run-blog\/a-guide-to-down-sleeping-bags-buying-guide\" target=\"_blank\"\u003eA Guide to Down Sleeping Bags\u003c\/a\u003e\u003c\/p\u003e\n\u003ch4\u003eSpecification\u003c\/h4\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003ctable class=\"product-specs-table__table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003cth\u003eRegular\u003c\/th\u003e\n\u003cth\u003eLong\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e3 lbs 4 oz (1480 g)\u003c\/td\u003e\n\u003ctd\u003e3 lbs 7 oz (1560 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePacked Dimensions\u003c\/th\u003e\n\u003ctd\u003e8.5 x 10 in (22 x 25 cm)\u003c\/td\u003e\n\u003ctd\u003e8.5 x 10 in (22 x 25 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFill Material\u003c\/th\u003e\n\u003ctd\u003e800-Fill PFAS-Free Hydrophobic Duck Down, RDS\u003c\/td\u003e\n\u003ctd\u003e800-Fill PFAS-Free Hydrophobic Duck Down, RDS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFill Weight\u003c\/th\u003e\n\u003ctd\u003e34 oz (965 g)\u003c\/td\u003e\n\u003ctd\u003e37.7 oz (1070 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFits (User Height)\u003c\/th\u003e\n\u003ctd\u003e72 in (183 cm)\u003c\/td\u003e\n\u003ctd\u003e78 in (198 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003ctd\u003e81 in (206 cm)\u003c\/td\u003e\n\u003ctd\u003e86 in (218 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGirth (Shoulder \/ Hip \/ Footbox)\u003c\/th\u003e\n\u003ctd\u003e64 \/ 59 \/ 46 in (163 \/ 150 \/ 117 cm)\u003c\/td\u003e\n\u003ctd\u003e68 \/ 60 \/ 51 in (173 \/ 152 \/ 130 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEN Comfort\u003c\/th\u003e\n\u003ctd\u003e-4 °F (-20 °C)\u003c\/td\u003e\n\u003ctd\u003e-4 °F (-20 °C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEN Limit\u003c\/th\u003e\n\u003ctd\u003e-20 °F (-30 °C)\u003c\/td\u003e\n\u003ctd\u003e-20 °F (-30 °C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFabric\u003c\/th\u003e\n\u003ctd\u003e100% Recycled 20D Nylon Ripstop, DWR\u003c\/td\u003e\n\u003ctd\u003e100% Recycled 20D Nylon Ripstop, DWR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd\u003eFlame\u003c\/td\u003e\n\u003ctd\u003eFlame\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCountry of Origin\u003c\/th\u003e\n\u003ctd\u003eVietnam\u003c\/td\u003e\n\u003ctd\u003eVietnam\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003e14212\u003c\/td\u003e\n\u003ctd\u003e14213\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Thermarest","offers":[{"title":"Regular","offer_id":56733507813749,"sku":"SS-DB-TPOLRANG--20C-R","price":705.0,"currency_code":"GBP","in_stock":true},{"title":"Long","offer_id":56733507846517,"sku":"SS-DB-TPOLRANG--20C-L","price":735.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1554\/2851\/files\/11401_thermarest_polar_ranger_-20_flame_regular_closed.jpg?v=1770975748"},{"product_id":"nemo-sonic-sleeping-bag-20f-29-c","title":"Nemo Sonic Sleeping Bag -20F\/-29°C","description":"\u003cp\u003eComfort doesn't have to be sacrificed for performance, and the Sonic certainly delivers on both. The Nemo Sonic is a high-performance ultralight mummy sleeping bag designed for mountaineers, winter expeditions, and alpine climbers who demand the most reliable warmth in the most extreme conditions. Built to handle everything from deep winter bivvies to high-altitude expeditions, it combines premium insulation, advanced temperature control, and rugged construction into one highly adaptable sleep system. \u003c\/p\u003e\n\u003cp\u003eEngineered as a true big-mountain sleeping bag, the Sonic is designed to perform across a huge temperature range, from mild conditions down to serious sub-zero expeditions. Its award-winning design delivers exceptional warmth and protection in harsh alpine environments.\u003c\/p\u003e\n\u003cp\u003eOne of the Sonic’s standout features is its second-generation Thermo Gill™ vents, allowing you to fine-tune temperature without exposing yourself to cold drafts. Multi-stage zip system expands the usable temperature range. Vent excess heat during milder conditions and retains warmth when temperatures drop. This makes the Sonic incredibly versatile, effectively replacing multiple sleeping bags with one adaptable system.\u003c\/p\u003e\n\u003cp\u003eFilled with 800 fill power hydrophobic down, the Sonic delivers outstanding warmth-to-weight performance: High loft for efficient heat retention. Moisture-resistant treatment for damp mountain conditions. RDS-certified for responsible sourcing paired with chevron baffle construction, the insulation stays evenly distributed, eliminating cold spots and preventing down migration.\u003c\/p\u003e\n\u003cp\u003eBuilt for real-world winter expedition conditons, every detail is designed for durability and performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/3YkNtgsdMA8?si=UP8y1Mmicfb5dB79\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMore Help?\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFor further assistance on choosing your down sleeping bag, we have an article explaining fill power, the pros and cons of down over synthetic insulation and more info on caring for your bag available to view \u003cspan\u003ehere: \u003c\/span\u003e\u003ca href=\"https:\/\/rockrun.com\/blogs\/the-flash-rock-run-blog\/a-guide-to-down-sleeping-bags-buying-guide\" title=\"Article: A guide to down sleeping bags...down explained\"\u003eA Guide to Down Sleeping Bags\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAward-winning design updated for even greater warmth retention and adjustability across temperatures.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSecond-generation Thermo Gill™ vents extend the comfort range with a new multistage zipper system.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eChevron baffle construction better compartmentalises down for more uniform loft and down migration prevention.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eToester™ waterproof\/breathable footbox utilises a layer of synthetic insulation to protect the down and deliver maximum toastiness for toes.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eConstructed with bluesign® approved 100% recycled shell and liner fabrics.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFilled with premium 800 FP hydrophobic, PFAS-free, RDS-certified down. Products certified to the Responsible Down Standard (RDS) contain down or feathers from farms certified to animal welfare requirements.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eStretch construction at the knees for comfortable side sleeping.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOffset zipper creates a thermally efficient seal while an updated profile secures warmth closer to the body.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWhat's included: Compression Sack, Mesh Storage Cube.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIntended use: Winter backpacking, camping and Alpine mountaineering\u003c\/li\u003e\n\u003cli\u003eSeason Rating:  4 season.\u003c\/li\u003e\n\u003cli\u003eSleeping bag Weight: Regular: 1.76kg \/ Long: 1.9kg\u003c\/li\u003e\n\u003cli\u003eMaximum User Height: \u003cmeta charset=\"utf-8\"\u003eRegular: 183cm \/ Long: 198cm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eComfort Temp Limit: -29°C\u003cmeta charset=\"utf-8\"\u003e\n\u003c\/li\u003e\n\u003cli\u003eDown treatment: Hydrophobic, PFC-Free Down\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMax Shoulder Circumference: Regular: 160cm \/ Long: 165cm\u003cmeta charset=\"utf-8\"\u003e\n\u003c\/li\u003e\n\u003cli\u003eShell Fabric: 20D 100% Recycled Nylon, Bluesign Certified Ripstop w\/ DWR\u003c\/li\u003e\n\u003cli\u003eLining: 20D 100% Recycled Polyester, Bluesign Approved Taffeta w\/ DWR\u003c\/li\u003e\n\u003cli\u003eFootbox \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFill power: 800 FP Down\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFill Weight: Regular: 1.06kg \/ Long: 1.12kg\u003c\/li\u003e\n\u003cli\u003eCompression Size: Regular: 37 x 27 cm \/ Long:  39 x 27 cm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eZip Configuration: Left\u003c\/li\u003e\n\u003cli\u003eColour: Goodnight Goodnight Gray \/ Torch\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCut: Mummy\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e","brand":"Nemo","offers":[{"title":"Regular","offer_id":57116903473525,"sku":"SS-DB-NSSB0F\/-29C-REGULAR","price":594.0,"currency_code":"GBP","in_stock":true},{"title":"Long","offer_id":57116903506293,"sku":"SS-DB-NSSB0F\/-29C-LONG","price":630.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1554\/2851\/files\/1_e75fc533-ee98-4275-800b-c82ecadea33a.png?v=1777543127"}],"url":"https:\/\/rockrun.com\/zh\/collections\/comfort-temperature-minus20-minus30\/nemo.oembed","provider":"Rock+Run","version":"1.0","type":"link"}