DESC: If you love sipping your coffee or tea throughout the morning, but hate how quickly it cools, then our ring mug is for you. The high sides of this ample mug help keep beverages warm. Chantal's high quality stoneware ensures excellent heat retention. Our exceptionally strong, non-porous glaze won't react with flavors and stays cooler for easier handling. This mug set cleans easily in the dishwasher and is microwave safe..