MONT Helium 450 Sleeping Bag -7°C

Unlock the Wild with Ultralight Comfort. Whether you’re backpacking across the Lake District or tackling a mountain ridge fast and light in alpine conditions, the Mont Helium 450 delivers exceptional warmth with minimal weight, so you can move freely, sleep soundly and wake ready for the next adventure.

Comfort Temperature Rating for warm sleepers: -7°C, cold sleepers: -1°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.

Standout Features

RADIAL ARC BAFFLE: 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.
When 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

TUCK STITCHING: 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.

TOASTER POCKET: is for slow-release, air-activated heat packs: your toes and feet will never be cold again. 

EXCEPTIONAL PACKABILITY: packs down to approximately 15 × 29 cm, making it ideal for compact riders, fast-packing trips, or multi-day carries.

More Help? For 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 here: A Guide to Down Sleeping Bags.

Features

• Tapered rectangular shape with a wide foot section for room to move
  
• Radial Arc Baffle System on horizontal baffles maximises loft height & warmth
  
• Vertical baffles on torso maintain optimal down distribution
  
• Differential cut reduces compression & cold spots
  
• Box walled baffles for warmth & weight efficiency
  
• Large down-filled 3D draft tube along zip retains heatÂ
  
• Contoured hood keeps down evenly distributed around head
  
• Laminated 210 denier Nylon anti-snag shield along zips
  
• Sewn with hydrophobic Epic thread to prevent moisture from wicking along seams and inside the shell
  
• Tuck stitched for seam strength & greater water resistance
  
• Full length YKK side zip with dual sliders & foot zip
  
• Includes ultralight siliconised-Nylon Z-Force Mechanical Advantage Compression
• Stuff Sack & 50L / 3,051cu.in polyester storage sack with printed care & washing instructions

Specification 

• Intended use: Hiking/backpacking
• Season Rating: 3-4 Season
• Maximum User Height: Women: 170cm / Standard: 200cm / Long: 200cm
• Cold Sleeper Comfort Temp: -1°C
• Warm Sleeper Comfort Temp: -7°C
• Down treatment: Water-resistant DWR Loft treatment
  
• Max Shoulder Circumference: Women's: 160cm / Regular: 160cm / Long: 170cm
  
• Insulated collar: No
• Shell Fabric: 520 thread count, 10 by 10 denier ultralight Nylon (26g/m2)
• Lining: 520 thread count, 10 by 10 denier ultralight Nylon (26g/m2)
• Filling: Premium white duck down
• Fill power: 800+
• Weight: Women's: 835g / Regular: 850g / Long: 1000g
• Fill Weight: Women's: 450g / Regular: 450g / Long: 550g
• Compression Size: 15x31cm(women's) / 15x31cm(standard) / 15x31cm(Long)
• Zip: Women's: Right / Standard/Long: Left
• Zip Configuration: Side & Foot zips. YKK brand zips, dual sliders on side zip
• Colour: Orange/Black
  
• Cut: Mummy