Cycling glasses R2 Crown * sun filter category: 1-3 * certification: CE EN 174: 2001 * weight: 17 g * 100% protection against UV radiation A,B,C * frame material: Grilamid TR90 - extremely light and very durable high -tech material with excellent flexibility and shape memory, increases wearing comfort * impact-resistant material * lens material: Photochromic impact-resistant polycarbonate * adjustable frame: the glasses can be adjusted to almost any type of nose for a perfect fit * anti-slip frames and sides * lens color: gray with flash mirror finish * size: standard * compatible with Pro Optic * optical sizes: 70-16-135 * included in the package is a microfiber fabric cover that can also be used as a cloth for glasses, hard case * sunglasses, sports glasses, cycling glasses