This frame is 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 Fits medium to large faces adjustable ear pieces for a customizable, comfortable fit adjustable hydrophilic rubber nose pieces for a no-slip fit Case included Lenses are prescription ready (rx-able) Dolomite 2.0, Pearl White Interchangeable Sunglass