Persol Sunglasses PO 3021/S BLACK 900/31 PO3021/S Composite Acetate frame Glass lens Lens width: 56 millimeters Bridge: 20 millimeters Arm: 145 millimeters Model No : PO3021S Lens Color :black/crystal green All items come with original case, cloth and manufacturers papers. Persol men Sunglasses Color Code : 900/31