A long time favourite the Billy sunglasses by BLOC are a Classic unisex shape for all occasions. The distortion free impact resistant XTR Karbon8 optical class one lenses provide maximum protection against UVA UVB and other harmful blue light up to 400nm. Silicon hypoallergenic non-slip nose pads XTR Karbon8 Lens MTX and KARBON TX injected temples Suitable for medium to large faces Colour: Gunmetal / Tort with graduated brown lens