Velo Shades sunglasses are the most durable and affordable active wear sunglasses on the market! Rumor has it that they may even increase Exit Velo and Throwing Velo with the extra Drip and Confidence they provide on and off the field. Gender: Unisex Frame Material: T90 Lightweight Polycarbonate Lenses: Polycarbonate, except for the Black Polarized sunglasses, which are TAC polarized Nose Pad: Rubber UV Rating: 100% UV Protection Fit / Size: Adult Medium / Large Vibe: Active Height: 74mm Width: 154mm In the Box: Hard Velo Protective Case, Microfiber Bag & Microfiber Cleaning Cloth Polycarbonate lenses are highly resistant to impact, won't shatter, and are 10 times stronger than glass or standard plastic, making them ideal for children, safety lenses, and physical activity. Lightweight and thinner than glass lenses, polycarbonate is more comfortable to wear for long periods of time. TR90 material was produced through Swiss technology as a thermoplastic material that is incredibly durable, flexible, and lightweight. Glasses made with TR90 are extremely comfortable because they have a flexible quality. Because the material is pliable, they are far less likely to break or bend from impact. Tri Acetate Cellulose (TAC) polarized lenses feature a new lens technology formulated for superior visual and polarization clarity. They have a scratch coating and block 100% harmful UV rays up to 400 nanometers. These lenses are very lightweight and highly impact resistant.