Keeping your gear dry is important to have a successful trek. Made from 260T mini Ripstop Nylon with a 2 layer waterproof coating and taped seams. With its elastic drawcord in the hem and cord lock, it will adjust to almost any pack size. Integrated stuff sack means stowing after use is quick and hassle-free. Dimensions: 33" x 17" x 10". Wt: 3.5 oz.