Ray Ban Sunglasses. Series number: RB4147. Color code: 710/51. Size: 60. Shape: Square. Lens Width: 60 mm. Lens Bridge: 15 mm. Arm Length: 145 mm. 100% UV protection. Non-Polarized. Frame Material: Nylon. Frame Color: Tortoise. Lenses Type: Light Brown Gradient. UPC/EAN code: 805289391586. Ray Ban Light Brown Gradient Sunglasses.