I'm selling this because I've graduated! I used it a few times in my home pool and checked it for about 4 days with the air still in it, and at that point, I didn't notice any air leaks. Please understand that this is a used vinyl product, and I cannot guarantee it 100%. Only those who understand this, please purchase. I've checked it thoroughly, and as shown in the image, there is one scuff mark. Please take a look.