The Western Mountaineering Apache MF 15 Degree Sleeping Bag is a weather resistant sleeping bag for two to three season warmth. Rated down to 15°F, you can take off in spring and not return until fall. The mountains Are yours to explore by foot. Come nightfall, the 850+ fill power down surrounds your body in a 6" loft so you can dream peacefully away from the cold. The MicroLite XP shell is breathable while still weather-resistant, so a rainy night or condensation can't ruin the adventure. At an average of 2lbs in weight, you'll be pleased at the warmth it can provide. Features of the Western Mountaineering Apache MF 15 Degree Sleeping Bag Made with Highly water resistant, breathable, lightweight MicroLite XP shell fabric 5 1/4in. spacing of continuous baffles that stretch from zipper to zipper An efficient cut allows the bag to heat up quicker and cuts down on weight Draft tube runs the length of the zipper and prevents cold drafts from ruining your slumber Full down collar seals in your body heat 19 oz of down fill gives this bag 6in. of loft and a rating down to 15? F 2 lbs 1 oz total weight