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 pieces for a customizable, comfortable fit     Fototec Lens Technology Fototec lenses with variable tint technology (T-V) adjust rapidly to changing light conditions for superior clarity and protection. In bright sun, microscopic ...