Made of Grilamid TR-90 a homopolyamide nylon characterized by an extremely high alternative bending strength low density & high resistance to chemical & UV damage Hydrophilic rubber ear & nose pieces for a no-slip fit Cover your bases with Tifosi Optics Interchangeable sunglasses. With a lens for every type of weather Mother Nature throws your way youll be prepared for even the most uncertain conditions.MATTE BLACK FRAME WITH SMOKE/ALL CONDITIONS RED & CLEAR LENSESWHITE/BLACK FRAME WITH SMOKE/ALL CONDITION RED & CLEAR LENSES