KastKing Waterproof Dry Bag with Zippered Compartment and Grab Handle - 30L DOUBLE SECURITY: Tough, durable 100% waterproof 500D PVC material, fusion welded seams.Unique water-tight DOUBLE overlap roll top provides the best-in-class waterproof performance. ZIPPERED FRONT POCKET: Allows for easy access for you to grab important items without having to unroll the top main compartment. FLOATING - The dry sack can float on water after rolled and buckled, so you can track your gear easily.Never worry about dropping it in water. SHOULDER STRAP: Adjustable and extends up to 36 inches with swivel hooks that allow for added comfort when you carry your pack. VERSATILITY: KastKing Dry Bags will not replace a PFD but can be used as a supplemental emergency flotation device.