Coleman Exponent Cloudcroft X 40-Degree Mummy Bag 100% Nylon with fill 100% Nylon Imported Size: 80" x 31" Keeps you comfortable down to 40, with wind-resistance and water-resistance 13 oz. goose-down insulation Engineered to keep goose down from shifting, preventing cold spots and retaining heat 4-way compression stuff sack included