Kenetrek Unisex 10" Rancher Insulated Boot,Kenetrek,10 inch Rancher" /> 100% Leather Rubber sole Handmade vulcanized rubber bottoms for increased durability Removable insulating liner with 400 gr of Thinsulate insulation together with 3 mm of wool felt for warmth without the bulk Tractor tread rubber outsoles don't plug up with mud