This waterproof winter pac boot lives up to its name, keeping feet warm in extremely cold temperatures. The Ice King™ features 400 G. Thinsulate™ Ultra Insulation, a 6mm footbed, an 8mm felt midsole, and a removable 3/4" poly foam liner for warmth. The ozone-resistant rubber bottom and full-grain leather and 1000 Denier nylon upper provide 100% waterproof protection. A classic, heavy-duty Trac-Lite™ outsole provides outstanding all-around traction in snow, ice and slush.