Waterproof Nubuck Leather + 200g Freeze Guard Insulation, 100% Post Consumer Recycled Polyester + B-DRY Waterproof Membrane, Molded rubber toe cap & heel kick + Gaiter D-Ring Board-Lasted O FIT Insole Thermal Single Density Compression Molded EVA, TPU Chassis, Nylon Shank Trail Tread Winter Compound This is our warmest, burliest boot, ready for any winter adventure. 400 grams of Freeze Guard Insulation keep feet warm while a DWR nubuck leather upper with our waterproof B-DRY liner ensures to keep feet dry. Add a TPU Chassis, and the winterized Granite Peak Outsole will keep you on track come snow, ice, or frozen tundra.