Tifosi Interchangeable sunglasses feature decentered, shatterproof polycarbonate lenses to virtually eliminate distortion, give sharp peripheral vision, and offer 100% protection from harmful UVA/UVB rays, bugs, rocks, or whatever else comes your way. Lens removal and installation is fast and easy. Extremely high alternative bending strength. Low density. High resistance to chemical and UV damage. Non-slip fit. Reflective coating increase terrain break awareness. Reduces eye strain and fatigue.