If super lightweight walking or ski touring is the thing for you then the Mont Helium sleeping bag series is an ideal choice. Impressively light, surprisingly compact and exceptionally warm by way of 800+ loft down.

Features:

- Filled with 300g of 800+ loft white duck down
- DWR Loft treatment on down keeps down lofting higher for longer in damp conditions
- Outer shell made from ultralight Nylon, 10 by 10 denier, 520 thread count, down proof, 26g/m2
- Inner shell made from 15 denier down proof Nylon
- Box walled construction for warmth and weight efficiency
- Radial Arc Baffle System maximises baffle loft height
- Differential cut reduces the potential for cold spot compression
- Contoured hood keeps down evenly distributed around your head
- Oven door foot venting system for temperature regulation
- Tuck stitching for increased durability of baffles
- Baffles sewn with Hydrophobic Epic thread which prevents moisture from wicking inside the shell
- YKK Full length side and foot zips to increase versatility
- Left and right hand models can be zipped together
- Oversized 3D draft tube prevents heat loss along zip
- Nylon 210 denier laminated anti-snag tape runs along zip
- Supplied with ultralight siliconised nylon stuff sack and large storage bag with printed care instructions

Specifications:

- Weight: 640g
- Down Fill Weight: 300g
- Down: 800+ loft white duck down
- Down treatment: DWR Loft
- Shell Fabric: 10 by 10 denier, ultralight Nylon (26g/m2)
- Upper Comfort: +4ºC
- Comfort Limit: -1ºC
(EN 13537 rated)
- Maximum User Height: 185cm
- Maximum Shoulder Circumference: 160cm