Matte Gunmetal Dolomite 2.0 single lens fototec model. Frame-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. Hydrophilic rubber ear and nose pieces for a no-slip fit. Adjustable temples and nose pieces for custom fit. Vented lenses improve air circulation, prevent fogging. Lens-comes with a high speed red fototec lens-this lens is a photo chromatic lens 35.3-13.5 percent light transmission-this lens sharpens contrast, details the road and terrain ahead, and cycles from light to dark very quickly. Ideal for activities when the sun is at its strongest.