LWG Gold Rated nubuck leather, B-DRY waterproof/breathable membrane, Freeze Guard 200g insulation, 50% recycled polyester lining, 100% recycled polyester webbing & laces Board-Lasted O FIT Insole Single-density EVA + TPU Shank Vibram XS Trek + Arctic Grip Pods Neither rain, nor snow, nor sleet, nor hail shall keep the Jourdaine from helping you get to your destination. The Jourdaine features a Vibram Arctic Grip sole that grabs hold of all winterized surfaces for complete sure footed-ness as well as 200 grams of recycled insulation for full winter warmth.