The only negative thing is that the bottom does not inflate, and when placed on a balcony, if a child slips and falls (especially with their head), it is certain that they will hit. I would like the bottom to inflate a little for safety reasons. I lay a rug underneath it. Otherwise, it is nice and spacious. A pump is necessary. It does not inflate with the mouth under any circumstances. Only time will tell about its quality. However, for 20 euros, I believe it is worth the purchase. Even if it lasts only one summer.