Five Interchangeable Lens 1 pair of polarized lenses and 4 pair pairs of interchangeable original lenses provide more using choice according to different activities, the grey polarized lenses can be used for riding, driving, golf on a strong sunlight day, the yellow one is for night activities, the anti fogging transparent lens are designed for cloudy and rainy days Lightweight Only 29g pair, great to wear for long periods of time. Ultralight cycling sunglasses reduce the pressure on your nose and temples Safety, 100 percentage UV400 protection can block both UVA and UVB harmful radiation. It is essential to protecting your eyes against all the rays below 400NM harm when doing outdoor sports Durable High toughness and well shock resistance polycarbonate lenses can be used for long time Myopia Frame It comes with one myopia frame for shortsighted lenses, Don't need to put contact lenses again Comfortable  Adjustable soft rubber nose bridge can easily find the right angle for you, the temple also can be replace by sports headband while riding running or playing golf, more comfortable and not easy to fall off