I'm very satisfied with the glasses. Did she cross-country skiing in use. Since I'm wearing glasses, so I need not wear sunglasses and am protected around the eyes from wind. However, should the glasses that you wear under it, do not be extremely wide. Then the sports glasses will not fit over it. The folding mechanism works well. The glasses sit comfortably with the tether. From me, there's a clear buy recommendation, especially as the price-performance ratio here is great!