This Bosmarlin Large Ceramic Coffee Mug is perfect for office and home use. With a capacity of 21 oz, it is made of lead-free, cadmium-free, high quality ceramic and is suitable for hot and cold drinks. It is dishwasher and microwave safe, and features a big handle to keep it from rotating when you hold it. The unique reactive glaze technique gives it a simple yet classic design, and it comes in four stylish colors, making it a great gift for any occasion. If you have any problems with the mug, just contact us and we will make every effort to solve it. Enjoy your tea or coffee with this durable and comfortable mug!