All Purpose Float Bags: Use it as a jet ski buoy, a buoy for boat cruising, an open water swim buoy or a float dry bag for kayak trips. Can also be used as canoe float bags, buoy training aid, a buoy for swimming pools + so much more. Recommended For: open water swimming or diving, kayaking, snorkeling, canoeing, boating, competing in long distance swim competitions, lifeguard safety training and whitewater rafting. The marine grade Pvc used to craft our flotation bags is a bright color, thus increasing its visibility when swimming open water, snorkeling and diving. (Does Not replace personal flotation devices.)