Johnson Brothers Willow Blue Dinnerware Coffee Mug Coffee Mug for the popular Johnson Brothers Willow Blue dinnerware collection Johnson Brothers Willow Blue dinnerware is appropriate for casual and formal settings Crafted of heavyweight earthenware; chip-resistant; hard, glazed surfaces Durable for everyday use - dishwasher, microwave and freezer safe Holds 12 ounces and is 3.9" tall x 3.5" wide.