Aerodynamic lines and engineered ventilation specialize the Crit for endurance sports. Adjustable arm and nose pieces specialize the Crit for you.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 ear and nose pieces for a customizable, comfortable fit. Vented lenses improve air circulation, prevent fogging.Key Features:Adjustable Ear Pieces,Adjustable Nose Pieces,Case Included,Glare Guard,Grilamid TR-90 Frame,Hydrophilic Rubber,Optically Decentered ,Polycarbonate Lenses,UV Protection,Vented Lenses.