Tifosi slice crystal smoke 3 lens sunglassesdelivering expert optics in a range of riding conditions, the tifosi slice crystal smoke 3 lens sunglasses come with three different lenses, in three different tints.keeping the glasses as lightweight and streamlined as possible the rimless frame helps put your vision first and provides an unobstructed field of vision. Meanwhile, preventing the glasses from moving about your face the ear and nose pieces are adjustable and are coated in a hydrophilic rubber that stabilises the fit and ensures long lasting comfort.three lensesmaking it easy to find the perfect coverage for various lighting conditions the sunglasses come with an easy to use interchangeable lens system and includes three sets of lenses. Each lens comes with a different lens tint. The lenses included areclear 95.6% light transmission. Great for darker lighting conditions. This is the best lens option for use on evening rides, and during indoor training sessions where lighting is incredibly low.ac red 41.1% light transmission. The best lens option for moderate and changing lighting conditions.clarion blue 14.7% light transmission. Best suited to bright lighting conditions.featurescomes with three different lenses, including clarion blue, ac red and clearadjustable ear and nose piecesincludes protective caseglare guard technologygrilamid tr 90 frame constructionhydrophilic rubber componentsoptically decentred lens for clarity visionpolycarbonate lens constructionuv protectionbuy tifosi sport sunglasses from chain reaction cycles, the world's largest online bike store.