Ray Ban Sunglasses. Series number - RB4428. Color code - 601S48. Shape - Square. Lens Width - 56 mm. Lens Bridge - 21 mm. Arm Length - 145 mm. 100% UV protection. Polarized. Frame Material - Propionate. Frame Color - Matte Black. Lenses Type - Polarized Black. Rim Style - Full-Rim. UPC/EAN code - 8056597939164. Ray Ban Polarized Black Square Unisex Sunglasses RB4428 601S48 56.All Ray Ban Eyewear may include Case/Pouch and may include a polishing cloth. Case size and color may vary.