Pacific Outdoor Equipment Pneumo LTW 5 Liter Sack Volume 5 (L) Durable, abrasion resistant 33D DRS (Diamond Rip Stop) Nylon with easy fastening Duraflex buckles The lightest waterproof compression stuff sacks on the market Purge valve for easy compression that allows the bag to fit into tighter quarters during travel Roll top waterproof design to keep all your items dry and secure