100% Waterproof, 100% Muckproof; 5mm CR Flex-Foam neoprene liner is 100% waterproof with exceptional comfort, flexibility, shock absorption and heat retention properties;; Breathable mesh lining wicks away humidity and perspiration, allowing air to travel throughout the boot; Easy to clean rubber overlays; Triple rubber toe reinforcement; Quadruple rubber heel reinforcement; bioDEWIX antimicrobial footbed insert topcover with NZYM for odor control and moisture management; Reinforced arch support; Steel shank for structural support; Quick cleaning rubber outsole offers durability and traction on slick surfaces