Bogs Men's Ranger-M 100% Rubber Imported Rubber sole Shaft measures approximately 13" from arch Heel measures approximately 1" Boot opening measures approximately 16" around 100% waterproof 7mm of bogs neo-tech lite insulation Scent combat bio-technology activates to fight unwanted odors Lined with everdry & bogs max-wick to absorb and evaporate sweat Rebound technology in outsole provides extra comfort