Ray ban sunglasses. Series number: rb4181. Shape: square. Lens width: 57 mm. Lens height: 45 mm. Lens bridge: 16 mm. Arm length: 145 mm. 100% uv protection. Non-polarized. Frame material: plastic. Lenses type: dark grey. Rim style: full-rim. Ray ban dark grey square mens sunglasses rb4181 601/87 57. Manufacturers packaging included. Packaging size and color may vary.