Trekkers and Trekkies alike will enjoy drinking their morning brew from this classy Star Trek What Are Little Girls Made Of 11 oz. Mug. This is a must have for Star Trek fans! The 11 oz. mug measures about 3 3/4-inches tall x 3 1/4-inches in diameter. Do not microwave. Hand wash only. Not dishwasher safe. Ages 13 and up.