Concept Our lightest-weight and warmest 850 fill-power down jacket, for use in the toughest conditions on any mountain in the world. Every detail of this jacket has been developed with and tested by our most technical mountaineers, including in extremely low temperatures. This is the thermal jacket for extreme cold. The Summit Down Jacket is our most technical and highest performance down jacket, designed so you can keep with you always, even in your backpack, given its minimal weight and bulk.
Fabrics Made of 25 g/m2 10-denier mini-ripstop Pertex Quantum fabric. DWR treatment both inside and outside. Wind resistant to hold in heat, and designed specifically for use with down. Extra soft for increased comfort, and compactible to stow in a backpack. White goose down (90/10) is of European origin with DWR treatment and is fluorine free and has a fill power of 850. Size L uses 260 grams of down.
