The Marc Johnson signature sunglasses are designed on the frame of a Leonard that is made from 100% real wood. The lenses are polarized with glare reduction and enhanced clarity for the best possible image, while being 100% UVA and UVB resistant to block your eyes from the harmful rays of the sun. The hinges are made from a durable metal with a spring hinge so you can bend the arms outward for an additional 30 degrees for the best possible comfort. The wood is extremely lightweight and you can feel the quality the moment you pick it up.