There is nothing wrong with the quality of these swim caps, although I can't speak to their durability since I just got them. I was hoping that they would be large enough to cover my ears also as I have problems when I swim with water getting stuck in my ears. They are so close to being big enough, but not quite. I am a guy with short hair, so it's not that I have too much hair either. If you're looking to protect your hair, they should be fine; but if you're looking to keep water out of your ears, try something else.