This Bosmarlin Extra Large Ceramic Coffee Mug is perfect for office and home use. With a large capacity of 23 oz, it is made of lead-free, cadmium-free, high quality ceramic and is suitable for hot and cold drinks. It is also dishwasher and microwave safe. The big handle makes it easy to hold and prevents it from rotating. The unique reactive glaze technique makes every mug unique and stylish. It is a great gift for the Holidays, birthdays and special occasions. If you have any problem with the mug, just contact us and we will make every effort to solve it. Enjoy your tea/coffee comfortably with this mug!