Ray Ban Sunglasses. Series Chromance. Series number - RB3686. Color code - 186/K8. Shape - Rectangular. Lens Width - 57 mm. Lens Height - 43 mm. Lens Bridge - 19 mm. Arm Length - 140 mm. 100% UV protection. Polarized. Frame Material - Stainless Steel. Frame Color - Matte Black On Black. Lenses Type - Polarized Dark Gray Chromance. Rim Style - Semi-Rimless. UPC/EAN code - 8056597625500. Ray Ban Chromance Polarized Dark Gray Rectangular Unisex Sunglasses RB3686 186/K8 57.All Ray Ban Eyewear may include Case/Pouch and may include a polishing cloth. Case size and color may vary.