Muck boot muckmaster mens boots these muck boot muckmaster mens boots have been crafted with a cr foam bootie making these boots 100 waterproof lightweight flexible and comfortable these boots also benefit from having a eva molded midsole with a contoured footbed whilst the 2mm thermal foam underlay provides great warmth and the breathable airmesh lining wicks away humidity and perspiration mens muck boots waterproof lightweight breathable flexible comfortable