Ray Ban Sunglasses. Series number - RB3721CH. Color code - 187/J0. Shape - Square. Lens Width - 59 mm. Lens Bridge - 17 mm. Arm Length - 145 mm. 100% UV protection. Polarized. Frame Material - Metal. Frame Color - Black On Gold. Lenses Type - Polarized Blue Gold Chromance. Rim Style - Full-Rim. UPC/EAN code - 8056597939973. Ray Ban Polarized Blue Gold Chromance Square Unisex Sunglasses RB3721CH 187/J0 59.All Ray Ban Eyewear may include Case/Pouch and may include a polishing cloth. Case size and color may vary.