The Forty is designed for demanding athletes. Constructed with TR90 material, for ultimate strength and durability. Soft adjustable nose pads for maximum comfort and the perfect fit. Malleable temple tips provide the best grip possible ensuring these sports sunglasses always perform in all conditions. Distortion free, impact resistant XTR Karbon8 optical class one grey lenses with a blue category 3 provide maximum protectiomn against UVA, UVB and other harmful blue light up to 400nm. Tested to BS EN ISO 12312-1:201.