Ray Ban Sunglasses. Series number - RB4387. Color code - 639980. Shape - Square. Lens Width - 56 mm. Lens Height - 49 mm. Lens Bridge - 18 mm. Arm Length - 145 mm. 100% UV Protection. Non-Polarized. Frame Material - Nylon. Frame Color - Polished Transparent Blue. Lenses Type - Dark Blue. Rim Style - Full-Rim. UPC/EAN code - 8053672986570. Ray Ban Dark Blue Square Unisex Sunglasses RB4387 639980 56.All Ray Ban Eyewear may include Case/Pouch and may include a polishing cloth. Case size and color may vary.