With the Tri-Scray 2.0 HR, Alpina continues the successful history of sport glasses with interchangeable lenses. The new half-frame version is aimed above all at sportsmen and women who are versatile on the road. Thanks to the Twist-Fix lens changing technology, the perfect tinted lens is just a flick of the wrist away. Click, clack – lens off. And just as quickly, the interchangeable lens is in. The adjustable nose pads are individually adjusted – they guarantee that the glasses always sit perfectly on the nose. Ergonomically shaped 2-component brackets ensure that the Tri-Scray 2.0 HR does not slip. Key Features: 100% UV protection, The reflective surface reflects infrared rays,The ceramic material lenses are break-proof and offer 100% protection,Clear, undistorted vision thanks to decentred lenses,Improved vision and protection from draughts thanks to strongly domed lenses and a targeted airflow management that prevents lenses from fogging up  .