Caliber Photochromatic Cycling Sunglasses WHITE AND BLACKAn evolution of one of our classic performance styles, the adjustability of the new Caliber allows you to customize the fit to your preferences. The wide temple arms provide extra protection, and the lens geometry is optimized for full coverage and a great field of vision. WHEN THE SUNLIGHT CHANGES, THE TINT CHANGES. The science behind it is complicated but the result is as simple as that. Each Photochromic lens contains millions of organic molecules