Dont let heavy glasses weight you down - Tempo guarantees a light experience with a lens in filter category 3. 25 grams is all it takes to create a pair of world-class sports glasses. This model that has quickly become a favorite for those who are into running and multisports. Tempos is especially well suited for athletes who have high demands when it comes to good vision eyewear. A Hydro Lens Tech-lens, detachable Top Bar, light weight and plenty of ways to adjust the glasses. You can easily switch the temples with the supplied strap. That way your glasses fit snugly on your head. With Tempo you can keep your own pace mile after mile with the best possible vision.Lens propertiesCategory 3. Tempo is equipped with Hydro Lens Technology. An unbreakable lens made of X-PC with high optical quality for clear and crisp vision in different weather conditions. The lens delivers complete UV protection, minimal refraction, anti-scratch and has hydrophobic qualities.MaterialsTempo is made from