finally! after several unsuccessful attempts, finally the product quality / perfect price! well adapted (or adaptable ... important) these glasses allow me to fully ensure the practice ... of course! I think also essential for other sports course! Light, sharp vision, they filter excellently sunlight without reflets.Je have not changed the glasses. Too satisfied with the original polarizing. It is accompanied by a series of spare, different colors and various gadgets in an ergonomic and protective case. From the outset I have ordered 2 ... here will make a beautiful gift! no regrets ....