Clarks Wavekorey Free. Sleek and rugged this men's slip-on shoe from the 1825 collection is an easy-to-wear addition to any wardrobe. The upper is made of full-grain leather with a fabric and leather lining designed to buffer the foot. Its thick rubber outsole absorbs shock and has ground-gripping properties for serious comfort. A handsome choice for khakis, cords, and relaxed denim.