Muck Boot Muckmaster Hi Boot Black Muckmaster Boots from Muck Boot Company provide maximum protection against rock and brush with extended rubber overlay and maximum stability on any terrain with molded, durable, rubber outsole. 100% waterproof, commercial grade Muckmaster Boot features: Stretch-fit topline binding snugs to calf to keep warmth in and cold out with a comfort range of sub-freezing to 85F 2 mm thermal foam underlay is added to instep area for additional warmth CR flex-foam bootie with 4-way stretch nylon that is lightweight, flexible and buoyant Breathable airmesh lining EVA molded midsole with contoured internal footbed Wrap-up bumper Additional Achilles overlay for added protection Convenient kick rim for hands-free removal Color: Black Size: M7/W8