Kwik Tek Dry Pak Roll Top Dry Bag 12-1/2" x 28" Yellow #453-WB7 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. The yellow and blue bags are constructed of extra heavy-duty vinyl / polyester tri-laminate with RF welded seams. 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 powerboats, sailboats, personal watercraft, kayaks, canoes, camping, motorcycles, ATV's, snowmobiles and car top luggage racks too!