The Muckmaster boot provides comfort in all weather conditions. With a stretch-fit top-line binding, these work boots stay snug to your calves; keeping warm air in and cold air out. The classic Muck Boot neoprene adjusts to the unique contours of your foot and the mesh lining lets your feet breathe, making these commercial-grade work boots flexible, 100% waterproof and comfortable. The thermal foam underlay and the EVA molded midsole provides optimum comfort and warmth underfoot. These high-performance work boots have extended rubber overlays and durable outsoles for ultimate protection and stability. No matter the weather conditions you're working in, these boots will make sure you stay dry and comfortable. Features100% Waterproof5mm CR Flex-Foam neoprene liner is 100% waterproof with exceptional comfort, flexibility, shock absorption and heat retention properties; adjusts to the contours of your foot to resist blisters and chafing2mm thermal foam under the footbed for extra warmth...