{"title":"Regular (185cm)","description":null,"products":[{"product_id":"sea-to-summit-reactor-fleeceweight-liner","title":"Sea to Summit Reactor Fleeceweight Liner","description":"\u003cp\u003eYour secret weapon against freezing nights, without the weight penalty. This Sea to Summit liner harnesses Thermolite® Fleece to deliver serious warmth while staying compact enough to slip into any pack. The stretchy fabric moves with you, armholes keep your shoulders fre\u003cimg\u003e\u003cimg\u003e\u003cimg\u003e\u003cimg\u003e\u003cimg\u003e\u003cimg\u003e\u003cimg\u003e\u003cimg\u003e\u003cimg\u003e\u003cimg\u003e\u003cimg\u003e\u003cimg\u003e\u003cimg\u003e\u003cimg\u003e\u003cimg\u003e\u003cimg\u003e\u003cimg\u003e\u003cimg\u003e\u003cimg\u003ee, and whether you're a restless sleeper or a still one, you'll stay comfortable. Snap it into compatible Sea to Summit sleeping bags for a locked-in fit, or layer it solo inside your existing bag. Machine washable and ready for adventure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMax User Length:\u003c\/strong\u003e 170cm (Short). 185cm (Regular). 198cm (Long).\u003c\/p\u003e\n\u003cp\u003eUsing Thermolite® hollow-core fibres in a grid-fleece construction, the Fleeceweight traps and reflects body heat to noticeably enhance your sleep system’s performance, adding up to 8°C of warmth with minimal added weight.\u003c\/p\u003e\n\u003cp\u003eThe liner is quick-drying and easy to clean, with HeiQ Fresh odour control to stay fresher on extended trips. It also helps extend your sleeping bag’s lifespan by reducing the need for frequent washing, preserving loft and long-term performance.\u003c\/p\u003e\n\u003cp\u003eBest Use For: Backpacking, Camping \u0026amp; Winter Camping.\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003eFeatures\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eFreedom to Move: Thermolite® Fleece fabric and armholes allow unrestricted movement in any sleep position.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThermal Boost: Grid-fleece with hollow-core fibres traps and reflects heat—adds up to 8°C warmth.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBag Compatibility: Fits any sleeping bag; snaps into Sea to Summit bags for secure placement and easy entry\/exit.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eExtend Bag Lifespan: Reduces washing frequency to maintain insulation loft and long-term performance.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eEasy to Clean: Quick-drying fabric with HeiQ Fresh odour control stays fresher on multi-day trips.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eIdeal for cold-weather backpacking, hut trips, and winter bivvies where extra warmth matters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSpecification\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eShape: Mummy\u003c\/li\u003e\n\u003cli\u003eAdded up to 8°C Warmth\u003c\/li\u003e\n\u003cli\u003eUser Length: 170cm (Short). 185cm (Regular). 198cm (Long).\u003c\/li\u003e\n\u003cli\u003eWeight: \u003cmeta charset=\"utf-8\"\u003e365g (Short). 400g (Regular). 420g (Long).\u003c\/li\u003e\n\u003cli\u003eStuff sack included\u003c\/li\u003e\n\u003cli\u003eMaterials: Thermolite Pro \u0026amp; Thermolite EcoMade\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e","brand":"Sea to Summit","offers":[{"title":"Short (170cm)","offer_id":56768089031029,"sku":"SS-SN-SSRFWL-SHORT","price":55.5,"currency_code":"GBP","in_stock":true},{"title":"Regular (185cm)","offer_id":56768088998261,"sku":"SS-SN-SSRFWL-REGULAR","price":55.5,"currency_code":"GBP","in_stock":true},{"title":"Long (198cm)","offer_id":56768201752949,"sku":"SS-SN-SSRFWL-LONG","price":55.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1554\/2851\/files\/053403_ReactorFleeceweightSleepingBagLiner_Long-Mummy_Picante_PRIMARY.jpg?v=1771600397"},{"product_id":"sea-to-summit-reactor-lightweight-liner","title":"Sea to Summit Reactor Lightweight Liner","description":"\u003cp\u003eBoost your sleeping bag's warmth without the extra heft. The Sea to Summit Reactor Lightweight Liner is your secret weapon for cosier nights. Its stretchy Thermolite® Pro fabric hugs your movements, while clever armholes let you sprawl out freely. The clever bit? Far Infrared (FIR) technology and hollow-core fibres work together to trap and reflect your body heat, cranking up warmth by up to 4°C without the bulk. Snap it into compatible Sea to Summit bags for a snug fit, or slip it into any sleeping bag. Built-in odour control keeps things fresh on long adventures, and it dries quickly too, meaning less laundry and a longer life for your beloved sleeping bag. Lightweight, versatile, and genuinely clever.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMax User Length:\u003c\/strong\u003e 170cm (Short). 185cm (Regular). 198cm (Long).\u003c\/p\u003e\n\u003cp\u003eBest Use For: Backpacking, Camping \u0026amp; Winter Camping.\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003eFeatures\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eFreedom to Move: Stretch-knit construction and armholes provide unrestricted comfort for any sleep position.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLightweight Thermal Boost: Thermolite® Pro with FIR and hollow-core fibres adds up to 4 °C | 7 °F warmth.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eEasy to Clean: Quick-drying and machine washable with HeiQ Fresh odour control treatment.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompatible Design: Fits all sleeping bags and snaps into Sea to Summit bags for secure positioning.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eProtects Your Sleeping Bag: Reduces washing frequency to maintain insulation loft and extend bag lifespan.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eIdeal for backpacking, travel, hut stays, and warmer-weather adventures.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSpecification\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eShape: Mummy\u003c\/li\u003e\n\u003cli\u003eAdded up to 4°C Warmth\u003c\/li\u003e\n\u003cli\u003eUser Length: 170cm (Short). 185cm (Regular). 198cm (Long).\u003c\/li\u003e\n\u003cli\u003eWeight: \u003cmeta charset=\"utf-8\"\u003e235g (Short). 255g (Regular). 260g (Long).\u003c\/li\u003e\n\u003cli\u003eStuff sack included\u003c\/li\u003e\n\u003cli\u003eMaterials: Thermolite Pro \u0026amp; Thermolite EcoMade\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e","brand":"Sea to Summit","offers":[{"title":"Short (170cm)","offer_id":56768214335861,"sku":"SS-SN-SSRLWL-SHORT","price":38.95,"currency_code":"GBP","in_stock":true},{"title":"Regular (185cm)","offer_id":56768214368629,"sku":"SS-SN-SSRLWL-REGULAR","price":38.95,"currency_code":"GBP","in_stock":true},{"title":"Long (198cm)","offer_id":56768214401397,"sku":"SS-SN-SSRLWL-LONG","price":38.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1554\/2851\/files\/053203_ReactorLightweightSleepingBagLiner_Long-Mummy_Pewter_PRIMARY.jpg?v=1771601503"},{"product_id":"sea-to-summit-reactor-midweight-liner","title":"Sea to Summit Reactor Midweight Liner","description":"\u003cp\u003eSnuggle up with the Sea to Summit Reactor Midweight Liner, your sleeping bag's best friend. This stretchy fleece layer adds serious warmth without the bulk, and its clever design means you'll never feel trapped, whether you're a sprawler or a fidgeter. Slip it inside any bag for instant cosiness, or snap it into compatible Sea to Summit models for hassle-free layering. Lightweight, packable, and ready for whatever adventure calls.\u003c\/p\u003e\n\u003cp\u003ePowered by Thermolite® Pro with Far Infrared (FIR) technology and hollow-core fibres, the Reactor Midweight efficiently traps and reflects body heat to increase warmth without unnecessary bulk, adding up to 6°C | 11°F when used as part of a sleep system.\u003c\/p\u003e\n\u003cp\u003eUnlike a full sleeping bag, the liner is easy to clean and quick-drying. The HeiQ Fresh odour-control treatment helps it stay fresh during extended trips, while reducing how often you need to wash your sleeping bag—helping maintain loft and extend its usable life.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMax User Length:\u003c\/strong\u003e 170cm (Short). 185cm (Regular). 198cm (Long).\u003c\/p\u003e\n\u003cp\u003eBest Use For: Backpacking, Camping \u0026amp; Winter Camping.\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003eFeatures\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eFreedom to Move: Stretch-knit construction and armholes allow unrestricted movement in any sleep position.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThermal Boost: Thermolite® Pro with FIR and hollow-core fibres traps and reflects heat—adds up to 6 °C | 11 °F to your system.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eEasy to Clean: Quick-drying fabric with HeiQ Fresh odour control for extended freshness on multi-day trips.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBag Compatibility: Fits any sleeping bag and snaps into Sea to Summit bags for easier entry\/exit.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eExtend Bag Lifespan: Reduces need for frequent washing, maintaining insulation loft over time.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAdventure-Ready: Ideal for backpacking, hut trips, bikepacking, and travel where warmth and hygiene matter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSpecification\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eShape: Mummy\u003c\/li\u003e\n\u003cli\u003eAdded up to 6°C Warmth\u003c\/li\u003e\n\u003cli\u003eUser Length: 170cm (Short). 185cm (Regular). 198cm (Long).\u003c\/li\u003e\n\u003cli\u003eWeight: \u003cmeta charset=\"utf-8\"\u003e330g (Short). 350g (Regular). 355g (Long).\u003c\/li\u003e\n\u003cli\u003eStuff sack included\u003c\/li\u003e\n\u003cli\u003eMaterials: Thermolite Pro \u0026amp; Thermolite EcoMade\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e","brand":"Sea to Summit","offers":[{"title":"Short (170cm)","offer_id":56768276824437,"sku":"SS-SN-SSRMWL-SHORT","price":46.95,"currency_code":"GBP","in_stock":true},{"title":"Regular (185cm)","offer_id":56768276857205,"sku":"SS-SN-SSRMWL-REGULAR","price":46.95,"currency_code":"GBP","in_stock":true},{"title":"Long (198cm)","offer_id":56768276889973,"sku":"SS-SN-SSRMWL-LONG","price":46.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1554\/2851\/files\/053303_ReactorMidweightSleepingBagLiner_LongMummy_Beluga_PRIMARY.jpg?v=1771602042"}],"url":"https:\/\/rockrun.com\/no\/collections\/size-regular-185cm\/40-60.oembed","provider":"Rock+Run","version":"1.0","type":"link"}