The Muck Boots Chore Steel Toe is the proven boot for many job sites where steel toe caps are mandatory. These will keep your toes safe, your feet warm, dry, comfortable and are built to handle the toughest job. 100% Waterproof Steel toe impact protection and steel shank for structural support Puncture resistant midsole ESR (electric shock resistant) rated outsoles Meets CSA Grade 1 standards Breathable mesh lining Stretch-fit comfort topline binding snugs calf to keep warmth in and cold & debris out 5mm 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 chafing Triple rubber toe reinforcement Quadruple rubber heel reinforcement Quick cleaning rubber outsole offers durability and traction on slick surfaces Reflective pull-tab for easy on and off Estimated boot height 40.5cm/ 15.9" Estimated max calf circumference 42cm/ 16.5" US Sizing Muck Boots Chore Steel Toe Cap Insulated Waterproof Boots with Steel Shank