This is the Tifosi Veloce Fototec Readers 2.0 Sunglasses. 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. Features: Grilamid TR-90 frame with a high chemical and UV resistance Adjustable ear pieces and nose piece Hydrophilic rubber ear and nose pieces for a slip resistant fit Polycarbonate lenses Vented lenses keeps you seeing clear even when working hard Fototec features photochromic lenses that get darker as your surroundings get brighter and visa versa Specifications: Style: Active Frame Color: Black Lens Color: Clear (Fototec, Photochromic, 2.0 Readers) Manufacturer Fit: Small, Medium, Large Interchangeable Lenses: Yes Extra Lens(es) Included: - Polarized: -