Our swim ring patch contains TPU. It can be applied to all kinds of inflatable or waterproof items: tents, swimming rings, inflatable boats, inflatable castles, inflatable toys, etc. Its use is simple: clean and dry the surface of the damaged swimming ring, remove the repair patch 34, apply it to the damaged area, and smooth it without bubbles. Wait about 30 minutes for it to bond firmly. And can repair subsidies can effectively repair the loopholes on the inflatable items, leaving no obvious repair traces.