Ray Ban Sunglasses. Series Chris. Series number: RB4187. Color code: 622/8G. Size: 54-18. Shape: Square. Lens Width: 54 mm. Lens Height: 44 mm. Lens Bridge: 18 mm. Arm Length: 145 mm. 100% UV Protection. Non-Polarized. Frame Material: Nylon. Frame Color: Black. Lenses Type: Grey Gradient. Rim Style: Full-Rim. UPC/EAN code: 713132581124. Ray Ban Chris Grey Gradient Square Unisex Sunglasses RB4187 622/8G 54.All Ray Ban Eyewear may include Case/Pouch and may include a polishing cloth. Case size and color may vary.