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 Like an SUV crossover, the Andesite has everything 99% of us need to conquer winter. From its Vibram Arctic Grip sole to its 200 grams of recycled insulation, the Andesite will get you to where you need to go through ice, snow, sleet, slush, and whatever else Mother Nature puts in your path.