This great dry bag from IST is perfect for your wet gear. This dry sack features: Constructed with a vinyl/nylon blend to be lightweight Perfect for River Rafters and all Water Sports Dry Compartment Secured with a Roll-Down Top with clip Keeps wet gear in place away from your dry items Easy access through the wide opening top When folded up takes very little space in your main dive bag Measurements are small 6 3/16 x 23 5/8", medium 7 7/8" x 27 5/8", large 13" x 38 5/8" A great way to keep your items dry on your next water adventure.