Resembles the shape, color and detail of a baseball - sip your hot beverages and represent your favorite sport. Individually hand-painted then glazed baseball mug, so no two are exactly alike. Use this unique baseball coffee mug for hot drinks, as a pencil holder or paperweight on your desk in your home or office. 12 oz ceramic. Tandem Sport has been manufacturing and distributing quality volleyball, sports medicine, equipment and training devices to the sporting goods market since 1989.