Tortoiseshell Acetate, Non-prescription Transparent Lenses, Silver Pins, Come With A Leather Case And Cleaning Cloth, Can Be Fitted With Prescription Or Uv-protective Lenses, Designer Colour: Havana Moscot 's 'Gelt' glasses are crafted from tortoiseshell acetate in a square-frame silhouette complemented by a keyhole bridge. An astute choice for daily wear, you can choose to fit them with prescription optical lenses or make them UV-protective.