Western Chief Men's Rambler Neoprene Mid BootThese Rambler all weather boots are the perfect way to stay protected from the elements High quality, waterproof rubber upper Molded stretch neoprene collar Lugged, slip resistant rubber outsole with gripping teeth traction 5mm Neoprene insulation Molded PU footbed WarmBuilt for up to 30 degrees Did you know rubber comes from trees? The process of making handmade boots involves mixing limestone and rubber to give the footwear its form. It's natural