The Chiruca Ottawa GORE-TEX shoes are designed with embossed Nobuck leather. They have GORE-TEX Performance Comfort lining and a 2-density sole: phylon midsole and Vibram outsole. In addition, they have the Omnific Megagrip compound.Features:Engraved Nobuck leatherGORE TEX Performance Comfort lining2 density sole: Vibram Omnific phylon midsole and Vibram Omnific plate with Megagrip compoundWeight: 412gTechnology:GORE-TEX Performance ComfortGarments made with GORE-TEX fabric provide maximum comfort and protection in a wide range of activities and weather conditions. The GORE-TEX membrane is water and wind resistant ensuring that no water gets in while allowing your feet to breathe. How is this achieved? Its pores are 20,000 times smaller than raindrops, but 700 times larger than water vapour molecules. In this way, water cannot get in but perspiration can get out and the skin can breathe.