Muck Chore Classic Men's Rubber Work Boots Synthetic Rubber sole Shaft measures approximately 15.5" from arch Heel measures approximately 1" Platform measures approximately 0.75" Boot opening measures approximately 17.75" around Item is UNISEX. Waterproof work boot featuring stretch-fit topline, breathable mesh lining, and wide-cut heel base for stability Reinforced Achilles, toe, and heel areas Kick rim on counter for hands-free removal Comfort range from sub-freezing conditions to 85 degrees Fahrenheit