I have these glasses now since about 6 months ... and I can say that it is ok ... but no more ... it is no longer clear in mind and they really need to sit well to prevent water from coming in ... especially when scratch one notices whether she sits ... they do it ... Unfortunately it also runs on ... So after 3 tracks I feel after swimming and not by sight ... because they already nciht was quite clear anyway and with the calling at will view not relieved ... but for the price it is ok ... once it is even worse, they will be replaced ... while is still my biggest question mark