Balenciaga Sunglasses. Series number: BB0174S. Color code: 001. Shape: Butterfly. Lens Width: 57 mm. Lens Bridge: 16 mm. Arm Length: 140 mm. 100% UV protection. Non-Polarized. Frame Material: Acetate. Frame Color: Black. Lenses Type: Grey. Rim Style: Full-Rim. UPC/EAN code: 889652344898. Balenciaga Grey Butterfly Ladies Sunglasses BB0174S 001 57.