The movie's logo and an iconic image of Robby the Robot from the sci-fi classic Forbidden Planet jump out at you from this striking Forbidden Planet 11 oz. Mug. You won't have any trouble finding this baby in that jumble of mugs on your shelf! Hand wash only. Not dishwasher safe. Do not microwave. Measures 3 3/4-inches x 3 1/4-inches in diameter.