The salice 012 sport sunglasses feature a lightweight design with streamlined glass for wide panoramic vision the scratch resistant lens blocks harmful uv radiation below 400nm wave length and the smooth surface enables water and dust to slide off the photochromic lens has light reflective technology that adjusts itself according to varying light conditions adkey featuresintegrated frontal air ventilationgrilamid tr90 lightweight flexible and durable frameinterchangeable megol rubber n