By combining a perforated rubber sole and the breathable waterproof membrane, the Geox system lets foot perspiration go out through the sole thus keeping your feet dry and healthy. The perforated rubber sole contains a special micro porous membrane that absorbs and expels sweat without letting water in. The micro pores are larger than water vapor molecules, but smaller than water droplets keeping water out and feet dry. Sweat can pass through the membrane as water vapor and out through the sole. The gradual elimination of humidity from the inside of the shoe creates the ideal microclimate for healthy feet. No more bad odors. Your feet will stay warm and dry in winter and cool and dry in the summer season. A sleek, open back driving moc to pair with trousers or jeans. Features a tumbled leather upper, equestrian bit hardware and an ultralight, waterproof and breathable rubber sole.