Create your own style! With the replaceable lens and temple tips you create the style you like and make a perfect match with your other gear. Sport glasses for cyclists who need prescription lenses. Optical lens feature with prescription lens interface. The optical lens interface works with a deviation between -6 and +6. Polycarbonate photochromic lenses. These lenses have a light transmission of 85-17%. The brighter the light, the darker the lens automatically becomes. One lens provides you with category 1, 2 and 3 levels of eye protection. Block system prevents the temple tips damage the lenses while folded inwards. High-end Grilamid frame with adjustable rubber nose piece.