Quick Patch Flex Repair
This rubberized version of Quick Patch UV Repair is perfect for inflatables (up to 35psi) as it is waterproof and has a bit of flex to it. You can even apply it underwater - just slap it on like a sticker and it won't come off. It will work on all surfaces from fabric to concrete so use it on tents, kayaks, rafts, air mattresses, downspouts, pipes, and more. It will seal holes and splits and won't dry or crack like tape, and you can paint it in 1 hour after curing. Heat-resistant and freeze-proof.