Designed to keep the contents of your pack organized and bone dry, Osprey&&';;s Dry Sacks provide the security of waterproof gear storage and color coded organization in your pack. Specs Volume Dimensions Weight O/S 1220 in3 / 20 l 19h x 10w x 6d in. 0.11 lbs. Fabric Main: 40D Nylon Ripstop Accent: 40D Nylon Ripstop Bottom: 40D Nylon Ripstop Features Roll top waterproof closure Waterproof coated fabric and seams Rectangular shape for efficient packing