Ray-Ban Sunglasses RB3548-N Hexagonal EVOLVE EVOLVE (photochromic lenses) change color from light blue to gray depending on the amount of UV light. There are no noticeable scratches or stains. A Ray-Ban case is also included. Frame: 9131/0Y Copper Lenses: Light Blue/Gray Size: 54□21-145 Lens Height: 47mm Front Height: approx. 48mm Front Width: approx. 137mm