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