I bought these for my skiing trip in France earlier this year. I bought these because they seemed like good value for money, and the fact you can change them into sunglasses. I have to say they are excellent, the quality is good and they felt very secure when on the slopes. If I have a slight gripe it would be that the lens can be a little too dark for some conditions, but in normal sunshine it is absolutely fine. Definitely a good alternative to ski googles, because these work well as sunglasses too.