I bought these for my husband as a present and the first pair I bought were defective and my husband didn't like them. The arms were grinding and flaking off the plastic at the joints. I exchanged them hoping that I just bought a lemon originally and that proved to be the case. We got the new pair and they work and look great. My husband loves them and I'm just thankful that it wasn't a classic stupid online purchase. We will be buying these again in the future.