Renaissance - Wood & Carbon Fibre SunglassesClassic square set multi layer wood3 sunglasses in both ebony and walnut wood frame and acetate tip arms come with a 2: 3 claw spring hinge for comfort. Available with UV400 quality TAC polarised lens and can be used for prescription lenses via the maple pin opening slot. Wood3 technology = wood < carbon fibre > wood Acetate tip arms Ethically made, recyclable materials Quality TAC polarised lens Opening slot for prescription lenses Solid 3: 2 claw