Thyme and Table White Coffee Tea Mug with Black Trim and Embossed Monogram Letter A is a contemporary style porcelain/ceramic mug with a glossy finish. It is 4-inch tall and has a 3 1/2-inch diameter across the top opening. The mug is microwave and dishwasher safe and has a printed backstamp. It is suitable for all occasions and can be used by teens and unisex adults.