Marvin The Martian Cartoon Character Ceramic Mug 18 Ounces by Westland Giftware Have your morning cup of coffee with the looniest of cartoons, Looney Tunes ! The Looney Tunes Marvin the Martian Head 18 oz. Molded Mug is the perfect item for you to drink any hot beverage out of while feeling like you want to destroy the Earth. Measures about 4 1/4-inches tall. Hand wash only. Not dishwasher safe. Do not microwave. Ages 13 and up.