The Muck Boots Peak Hardcore Men's Boots are the MOST advanced cold weather hiking boot in its class, sparing no detail on comfort. Comprised of full grain crazy horse leather with 6mm of cushioning neoprene insulation, the Peak Hardcore provides exceptional support and protection against the elements. Extremely lightweight and durable, the Spandura® exterior is built to endure the test of time while the aggressive outsole ensures maximum stability on any unsteady terrain. Rated at minus 40 degrees and 100% waterproof, this versatile boot is ideal for hiking, ice fishing, or any extreme outdoor activity.