Golden Retriever Men's 4788 Work Boot 100% Leather Imported Rubber sole This rugged work boot is ready to meet the demanding conditions of your full work day Nubuck leather and synthetic upper Dry Dawgs&#153; waterproof breathable membrane 600 grams of Thinsulate Ultra&#153; insulation Moisture-wicking ECO polyurethane insole with Aegis Microbe Shield&#153; odor control treatment to prevent and control bacterial and fungal growth