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 reinforced bags, made of durable waterproof 19 oz. polyester mesh reinforcement. Great for power boats, sail boats, personal watercraft, kayaks, canoes, camping, motorcycles, ATV's, snowmobiles and car top luggage racks too.