GEOX, Men's fashionable dress shoe, Quality leather upper and lining. Rubber Outsole, U22W1A C9999 Black 80% leather rubber sole Geox footwear boasts Italian style and technology  a unique blend of fashion and functionality All Geox shoes feet keep cool and dry thanks to the breathable membrane and the perforated sole. The rubber sole is perforated and contains a special microporous membrane, waterproof and breathable, that absorbs and expels sweat WITHOUT letting water in. Upper - Leather Lining - Leather, Sole - Rubber. Lightweight design.