This is a cool unisex photochromic goggle in category 4 by Brunotti. This means that the lens automatically adjusts to any weather conditions, so you don't have to change lenses anymore. The Thunder's spherical lens ensures that you have a wider field of vision and less glare in the snow. The goggles have a large black frame and are made of strong polycarbonate. Polycarbonate is extremely strong and also flexible. On the inside of the goggles a triple layer of foam is applied, this keeps the inside dry and the glasses remain in place. The lens and frame of these goggles are ventilated from top to bottom. This gives you good air circulation, so you have less chance of condensation and the glasses do not fog up. The glasses have double lenses that also prevent condensation. The elastic band is black with the Brunotti logo on it.