The tifosi veloce sunglasses with interchangeable clarion lens 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 this frame is compatible with the veloce rx adaptor tifosi veloce sungla