The Boston Warehouse Udderly Cows series is made for the moo lover. This 20 ounce mug comes with non-slip silicone feet and provides a fun way to drink your favorite hot beverage. Made of hand painted earthenware. From Boston Warehouse - creative ideas for home entertaining. Product Measures: 3.5 wide by 4.5 long by 4.5 tall/deep Features: Made of hand painted earthenware with non-slip silicone feet. Hand wash recommended. 20 ounce capacity.