Men's Muck Muckmaster Commercial Grade Rubber Boots, Work Boots 664911-MMM-500A The original Muckmaster, serving farmers and outdoor workers for over a decade. Delivering high performance and protection and optimial fit and comfort. This rugged boot withstands sharp objects while the breathable lining keeps your feet cool and dry in challenging weather conditions. Features Extended rubber overlay for added protection MSI Bobbed Molded Outsole 5mm NEOPRENE bootie with four-way stretch nylon,100% waterproof, lightweight and flexible Shaft Circumference: 17in Stretch-fit topline binding snugs calf to keep warmth in and cold out Height: 12in MS-1 molded outsole is rugged, aggressive and durable for maximum protection and stability EVA molded midsole with contoured footbed (internal) 2mm thermal foam underlay added to the instep area for additional warmth Men's Muck Muckmaster Commercial Grade Rubber Boots, Work Boots