The Tifosi Rail Sunglass strikes a perfect blend of ultra-lightweight, ventilation-forward rimless design and oversized coverage. Its frame is balanced for all-day comfort and the shatterproof lenses ensure long-term use. Rail's rimless shield frame keeps eyes protected from debris while still offering maximum airflow, whether you're hammering the tarmac or hitting the trails. FEATURES : Made of Grilamid TR-90, a homopolyamide nylon characterized by an extremely high alternative bending strength, low density and high resistance to chemical and UV damage Polycarbonate lenses are scratch resistant and shatterproof, providing 100% UVA/UVB protection to shield your eyes from harmful rays Non-photochromic versions include interchangeable lenses so you can choose the best one for the conditions Optically decentered to eliminate distortion Glare guard lens coating helps reduce eye strain Tifosi Glide allows the frames to slide on comfortably and provides an anti-bounce fit for all activities Adjustable hydrophilic rubber ear and nose pieces ensure your shades won't slip Integrated hinges allow for a snug and comfortable fit Includes a microfiber cleaning bag