Archer Outdoor Gear Ultra-Light Duck Down Winter Sleeping Bag Survival Temperature Rating of 22 F nylon, duck down Imported Large mummy sack is 85in x 30in x 22in, providing plenty of room & comfort for adults or kids Shell is lightweight, water-resistant, 320t, rip-stop nylon for complete protection from the elements Inner liner is made from synthetic silk, polyester fiber that provides optimal freedom of movement 1500 Gm natural, duck fill is sub-zero, cold-weather rated for 3-season, camping & hiking enjoyment Comfortable temperature of -5f, comes with handy compression sack for compact storage in a backpack and weighs in at just over 4 pounds for easy hiking