Crafted of stoneware, featuring a reactive glaze. Due to the nature of reactive glaze, each piece of this handcrafted collection will exhibit unique variations in color and pattern. This mug is perfect for morning coffee, afternoon tea, or cocoa by the fire, but it's also great for juice, milk or tangy soup. Fill with flavored coffee or tea making a lovely gift for a friend or co-worker. Microwave and dishwasher safe. Mug holds 12 ounces.