SPECS: Weight: 2 lbs. 6 oz. Fill Weight: 1 lb. 8 oz. Fits: 6 ft. / 183 cm. Length: 78 in. / 198 cm. Shoulder Width: 31 in. / 78.5 cm. Stuffed size: 15 x 8.5 in. / 38 x 22 cm. TEMPERATURE RATING: ISO Comfort Rating: 37deg F / 3deg C ISO Limit Rating: 27deg F / -3deg C MATERIALS: Insulation: Cirroloft Shell material: 380T Nylon Taffeta Liner material: 50D 300T Poly Taffeta DESIGN & DETAILS: The Kelty(R) Pack Cosmic Synthetic 40 is designed with CirroLoft synthetic insulation Internal stash pocket stores smaller items so that you'll have easy access when needed PFC-free DWR fabrics and natural footbox for more wiggle room Includes compression stuff sack