The REI Co-op women's Magma 17 Sleeping Bag offers low-load packing and a great warmth-to-weight ratio thanks to lightweight construction, a fitted silhouette and premium water-resistant goose down. FILL. 850-fill-power goose down. WEIGHT. Long: 2 lbs. 6 oz. Regular: 2 lbs. 4 oz. COMPRESSED VOLUME. Long: 7.9 liters. Regular: 7.3 liters. TEMPERATURE RATING (F). 17 degrees (F)

• Redesigned for increased knee and foot space, Magma 17 delivers the most efficient fit of the REI Co-op brand sleeping bag line for a high warmth-to-weight ratio
• Downproof Pertex® shell, water-resistant 850-fill goose down and supple 15-denier lining combine to provide lasting coziness and a super-soft feel
• Trapezoidal foot box keeps feet comfy; a toe box baffle positions downward to provide warmth
• Variable baffle spacing locates and stabilizes down fill, delivering high thermal efficiency and reducing weight
• New zipper cover and internal antisnag strip combine for easy zipping; a hybrid zipper path provides easy access along shoulders and torso
• A contoured hood retains warmth while providing space for a low-profile pillow; two different hood drawcords allow internal adjustment to avoid heat loss
• Insulated yoke fills neck and shoulder gap to prevent heat loss
• Includes a stuff sack for packing and a roomy mesh sack for breathable storage
• 2017 Editors' Choice Award winner from Backpacker magazine