We bought these tubes for a facilitiy on a calm ocean front for their length.  The tubes are well made and fit their description, but the tubes edges come to a point instead of a beveled edge.  Salt water and sun will soon strip these edges, leaving the length of the tube exposed  and potentially poking into our lifeguards. Most tubes are more rounded at the edges to preserve tube life and lifeguard comfort.  Also, it is nice to have a clip on the other end from the strap in order to hang tubes when not in use.  A fine tube but I would not buy them again.