Ray-Ban RB2140 Original Wayfarer Sunglasses Acetate Frame. Acetate is a plant-based plastic known for being lightweight, yet durable. Imported Plastic frame Crystal lens Non-Polarized 100% UV400 protection coating Lens width: 50 millimeters Lens height: 37 millimeters Bridge: 22 millimeters Arm: 150 millimeters 2" high 3" wide Glasses might not sit completely flat Slight adjustments to the shape and curvature of the sunglasses arms may be needed to get a custom fit. Adjustments should be made by a professional. The shape and curvature of these sunglasses may need adjustments. Adjustments should only be made by a professional. Lenses are prescription-ready (Rx-able). Ray-Ban products include an etched "RB" on the left lens. The RB is not a scratch or defect. Protective case included cases come in a variety of colors. You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!