Dimensions: 8.25W x 9.75D x 1.5H in.. Durable nylon construction. Zipper closure on top and bottom. Adjustable compression straps on sides. 15 liter capacity. Saves space by compressing sleeping bags and equipment. Carry more than you thought possible with the help of the Coghlans 15 Liter Compression Sack. This handy sack uses a buckle design to compress your things into a manageable space.