Ray Ban Sunglasses. Series Square Classic. Color code: 91493F. Size: 54. Lens Width: 54 mm. Lens Bridge: 19 mm. Arm Length: 145 mm. 100% UV protection. Non-Polarized. Frame Material: Metal. Frame Color: Silver. Lenses Type: Light Blue. UPC/EAN code: 8056597053990. Ray Ban Square Classic Light Blue Sunglasses RB1971 91493F 54.