Dimensions: 10.5W x 11.75D x 1.75H in.. Durable nylon construction. Zipper closure on top and bottom. Adjustable compression straps on sides. 30 liter capacity. Saves space by compressing sleeping bags and equipment. Carry more gear in smaller space with the help of the Coghlans 30 Liter Compression Sack. This durable nylon sack is finished with adjustable buckles for easy compression.