Polarized Reactor photochromic lens that changes according to light conditions. From dark tinted on sunny days to clear lens when it is gray and rainy. Exclusive Advanced Ultra Fit rubber - 10% softer silicone seal around the eyes for high comfort Unique 3D FlexPoint allows frame and nose bridge to move with the face CLT Curved Lens Technology offers 180° vision Anti-fog lenses Maximum UV protection - blocks 99 to 100% of the sun's harmful UV rays Comes with a sturdy case for the glasses Approved by Fina