Our pool air bladder edge is round and we couldn't ever get this to stick right. I'm sure it would work well if we had a flatter surface to work withHonestly didn’t have to patch the pool this year.?Though these come with no direction I applied them on the leaking location and they are holding up, a couple have some minimal leakage. Guess I should reapply at those spots.Difícil de usarThe patches did not hold up well under water!Doesn’t stick very well.Didn’t work very wellI was very leery when I red the reviews but this product worked great for me to patch several small holes/rips (thanks to dog claws) around the top of my vinyl pool. They worked perfectly and have held for a few weeks now.Pésimo, no compren. Les conviene mejor agarrar una bolsa y ponerle resistol que gastar en estos “parches”