NEVER USED. The DENBY Juice Blue Mug is a stylish and durable coffee mug made of stoneware in England. With a capacity of 6 fl oz and a round shape, this mug is perfect for all occasions. The beautiful blue color adds a pop of color to your morning routine. It is also freezer, microwave, dishwasher, and oven-safe, making it a versatile and practical addition to your kitchen. Made by the reputable brand Denby Pottery, this mug is a quality piece that will last for years to come.