Versatile and durable, your gear will stay dry inside these round bottom dry bags, even in adverse conditions. Shut out water by rolling the top a few times and snapping the squeeze-style" side release buckles together. Once the roll top is buckled it doubles as a top grab handle for easy transport. The yellow , black , white , and red bags are constructed of extra heavy-duty vinyl /polyester tri-laminate with radio frequency (RF) welded seams. If getting things out of a bag while wet, in the rain or a less than optimum environments quickly then the clear bag versions are what you need. It is easy to find items inside the clear bags, which are made of durable waterproof 19 oz. (539 g) vinyl and (RF) welded seams. Great for power boats, sail boats, personal watercraft, kayaks, canoes, camping, motorcycles, ATVs, snowmobiles, sent proof hunting and car top luggage racks!