Better Quality, Longer Lasting Waterproof Dry Bags. Like all products created at Waves, the Infinite Dry line came about due to our need to solve a problem, in this case, to keep our gear safe and dry. Most waterproof dry bags are created with a very lightweight PVC material that is susceptible to rips and tears. That simply would not work for us. We opted to create our Infinite Dry line with 500D PVC, one of the thickest on the market. All seams are thermally welded to ensure your gear stays dry and of course added some kick-ass style to our waterproof dry bags.