Bought the mermaid tail for my granddaughters birthday in June. Also bought a new monofin. The tail has already started to wear on both corners. You can see the protective strip through the material. This the second one that has worn through. However the first tail lasted a bit longer. She only uses it in a backyard pool occasionally. I even got the next size bigger thinking the first one may have been too small. The monofin holds up very well, but the materials used for the tails are in my opinion of very poor quality for the price.