Efficient four-chamber, hollow-fiber polyester insulation makes this Cabela's Boys' Mummy 30° Sleeping Bag a great choice for your next family outing. 40-denier polyester-taffeta shell. 30-denier polyester-taffeta lining makes it easy to get in and out of. Anti-snag #8 coil zipper and insulated zipper baffle keep cold air out. Single-layer construction. Includes separate stuff sack. Imported.