Super glasses with "by sight". Finally I see while swimming, the race (triathlon), I use contact lenses. For the swim training these glasses are simply more convenient and affordable. The price is simply unique low, I paid for my "normal" swimming goggles more. Problems with water inlet and fogging I can not confirm. In my expensive eyeglasses but I had already partially mentioned problems. A spare belt and different nose Steege I in no other, get expensive goggles ever do so. Just buy it, even if you may not be exact (0.5 diopter steps) gets eyesight.