Design and Details: Traps insulating air to increase warmth of a sleeping bag by up to 14degf /8degc Stretchy, thermolite(R) fabric is incredibly comfortable Lighter weight and more packable than fleece Technical mummy-shape with drawstring hood Easy care - machine wash with no special soap is needed. avoid fabric softeners and dryer sheets Keeps sleeping bag clean Packs into its own ultra-sil stuff sack Specs: Weight: 8.7 oz | 248 g Length: 6 ft 10" | 208 cm Packed size: 5.75 x 4" | 15 x 11 cm