Dry sacks designed to protect the contents from the elements. The Outdoor Products Ultimate Dry Sack comes in a 3-pack so you'll have the right size on hand to protect your gear. Polyurethane-coated fabric combines with a watertight roll top closure and taped seams to keep water out (not intended for full submersion).Set includes three dry sacks (2L, 4L & 8L). Super compact and ultra-lightweight. Watertight roll top closure. Soft and flexible rip-stop fabric. Polyurethane coated for ultimate waterproofing. Double stitched with watertight taped seams. Roll top allows maximum compression. Not intended for full submersion. Dimensions: 6.75in. Dia x 10.75in. W x 22in. H / 9.5in. W x 15.5in. H / 7.75in. W x 13in. H.