Khombu Jack Boys Suede Snow Boot (Little Kid/Big Kid) Manmade Imported Rubber sole Shaft measures approximately 4.8 from arch Waterproof Sole Easily Adjustable Bungee Closure Insulated Lining, for extra warmth Thermolite Insole, to protect your feet from the cold Temperature Rated: Tested to withstand temperatures of up to -20F (20 degrees below zero)