Biology is my Bag. Biologist teacher researcher science student text Stein Mug is a great way to enjoy any beverage. This 22 oz ceramic stein features a large sturdy handle, gold banding at rim and base, along with a decorative casting throughout. Why drink out of an ordinary mug when a custom printed mug is so much cooler? Image is printed on both sides. Hand washing is recommended, not for use in microwave.