For seat: I found at the beginning that the web was very uncomfortable in the middle, have me but now accustomed. However, what still bothers me is that I do not get really waterproof. I had not expected that you can jump into the water with these glasses, but that it is even leaking from the edge of the push-off, I find less well. Overall, the Arena Swimming Goggles is still a reasonably sensible glasses should be sufficient for the casual swimmer thoroughly.