Frostline 0F Down Mummy Bag

The Cairn Alpine Frostline 0F Mummy Bag is engineered for extreme cold, making it essential for 4-season backpacking, alpine climbing, and backcountry ski touring. Its performance mummy cut is optimized for thermal efficiency, packed with 750g of 850-fill power RDS-certified hydrophobic goose down. The advanced trapezoidal box baffle construction eliminates cold spots, while the 20D ripstop nylon shell with DWR offers robust protection. Essential features like the insulated draft collar and full-length draft tube seal in warmth, complemented by a two-way YKK #5 anti-snag zipper and multi-cord adjustable contoured hood for precise heat management. Weighing just 1290g and packing down to 12L, this bag delivers uncompromising warmth when every gram counts. Designed for a thermally efficient fit, it's ideal for those prioritizing warmth in the most demanding cold weather environments.

Technical

Weight	1.29 kg
Temp Rating F	0
Fill Type	down
Fill Power	850
Fill Weight g	750
Shell Denier	20
Baffle Style	trapezoidal box
Packed Size L	12
Zipper Side	left