the worst purchase I have ever made! you pay so much money and after 5 uses the white frame got ruined. the blue case stained it and left blue color on the white frame which does not come off, and at the nose area it has turned yellow which also does not clean off at all! all this after just 5 uses and I paid 240 euros! also, the lens does not protect well from the sun and because they are square, the sun comes in from the top!