Ray-Ban Clubmaster Blue-Light Clear sunglasses, with their classic black frame color, are a must-have for all digital natives. These unisex square frames are made of acetate material with mirror lenses for an edgier look. The clear lenses with blue-violet light reduce exposure to blue light* from artificial sources and sun rays (primary source) — making these glasses ideal for everyday lifestyle.*Blue-violet light is between 400 and 455nm as stated by ISO TR20772 2018.