The Eureka Spero 20 Degree Mummy Sleeping Bag features a performance shape and shingle style construction, for maximum warmth in a minimal package, for extended time on the trail. It features Synthesis, Eureka's performance synthetic insulation, inside durable and lightweight fabrics. The anatomically shaped hood rounds out the performance features in this dependable bag. Size: Regular: 78 x 31 x 19, Long: 84 x 33 x 21 Stuff Size: Regular: 8.5 x 18, Long: 9 x 18 Fits To: Regular: 6 ft., Long: 6 ft. 6 in. Fill Weight: Regular: 2 lbs. 1 oz., Long: 2 lbs. 3 oz. Total Weight: Regular: 3 lbs. 1 oz., Long: 3 lbs. 4 oz. Eureka! Synthesis insulation Proprietary blend of synthetic fibers optimizes thermal performance. Eureka's lightest, most compressible and resilient insulation. Trim, performance shape. Shingle construction. Anatomic hood design. Shell fabric: 40D290T polyester taffeta. Lining fabric: 50D300T peached polyester. Locking, 5 zipper. Full length draft tube with anti snag zipper guard. Insulated hood and chin baffles. Compression stuff sack included.