WB-4: 11-1/2" diam. x 19" YellowDRY PAK Roll Top Dry BagsVersatile 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. Its 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 ATVs snowmobiles and car top luggage racks too! Product : DRY PAK ROLL TOP DRY GEAR BAG MED YELLOW Manufacturer : DRY PAK Manufacturer Part No : WB-4 UPC : 737826016433