Batman Harley Quinn 16 oz. Flip-Straw Travel Cup Harley might be as crazy as a loon, but she sure looks great on this Batman Harley Quinn 16 oz. Flip-Straw Travel Cup! It's a 6-inch tall acrylic cup with a flip-top spout. It also looks awesome! Hand wash only. Not dishwasher safe. Do not microwave. Ages 15 and up.