Ray Ban Sunglasses. Series Square Evolve. Series number: RB1971. Color code: 9152AB. Size: 54. Shape: Square. Lens Width: 54 mm. Lens Bridge: 19 mm. Arm Length: 145 mm. 100% UV protection. Non-Polarized. Frame Material: Metal. Frame Color: Black. Lenses Type: Yellow Photocromic. UPC/EAN code: 8056597054034. Ray Ban Square Evolve Yellow Photocromic Square Sunglasses RB1971 9152AB 54.