This is the Hollis PVC Tarpaulin Black Dry Bag For Scuba Diving Features: PVC-tarpaulin 9 W x 21.25" H Roll closure system Waterproof materials High-frequency welded and heat seal taped technique make the bag watertight This dry bag is ideal for all types of outdoor adventures, from camping to white water rafting, boat trips to biking. The classic stuff-sack design built to stay dry. "