I have not yet used the lenses for skiing but I have tried them on and they are clear and fit well inside goggles. I had a previous pair on which I managed to snap one of the flexible legs that fixes the lenses inside the goggles. I don't think there was a fault with the lenses. I was clumsy, trying to force the lenses into the goggle while wearing thick gloves. My experience with the goggles is that they dramatically improve vision and help with depth perception. It's great to ski with a clear, sharp view.