Airhead WB-4 Roll Top Dry Bag in Yellow 11-1/2" x 19" Versatile and durable, your gear will stay dry inside these round bottom dry bags, even in adverse conditions. Shut out water by rolling down the top a few times and snapping the side release buckles together. It's quick and easy to find items inside the clear bags, made of durable waterproof 19 oz. vinyl with RF-welded seams. Great for power boats, sail boats, personal watercraft, kayaks, canoes, camping, motorcycles, ATV's, snowmobiles and car top luggage racks too!