The Campmor Vertical Compression Stuff Sack 7 in. x 21 in. is durable and lightweight, made of 200 denier ripstop nylon for rugged use. Compression stuff sacks are a must have, when you're trying to squeeze bulky synthetic-insulated sleeping bags into compact backpack sleeping bag compartments.200 denier ripstop nylon. Four straps: 2 with side release buckles for quick access, and 2 with ladder lock buckles. Bottom has a webbing handle to help remove sleeping bag. Reduces pack size by 25-40%. The bag is hinged to cap so the straps don't tangle. Wt: 7.3 oz. Made in USA.