ISPORT Lightweight Super Warm Duck Down Sleeping Bag with 300 Filling Power Mummy Style Out fabric:100% 320T nylon fabric/inner :320T polyester pongee Ripstop Filler:1000g with 300 Filling Power white duck down Unfold size 82 * 31 inches (L*W) Mummy Shaped for increased warmth,Season 2/3 - Great for winter use Waterproof, Windproof, Lightweight, Breathable, Comfortable,light weight easy to carry in backpack and warm enough to withstand below freezing temperatures.