Beat the cold of winter with the Original Muck Boot Company Arctic Sport Mid boot. This extreme-conditions sport boot features a durable, 100 percent waterproof rubber and neoprene upper for extreme weather protection; a wrap-up toe bumper, along with reinforced instep, heel and Achilles panels, delivers structure and support. A thermal foam underlay added to the instep offers additional warmth. The stretch-fit topline binding provides a secure fit around the calf to keep unwanted dirt and pebbles out, while the removable, 6MM Nitracel EVA insole lends underfoot cushioning and a slipper-like feel. The CR Flex Foam Bootie of the Original Muck Boot Company Arctic Sport Mid boot cradles the foot in ultimate comfort while insulating from the cold, with a four-way stretch nylon lining for easy on/off. The molded rubber outsole wraps the entire perimeter to give you maximum protection and stability on steep terrain.