Betty Boop "Kiss" 16 Ounce Insulated Acrylic Tumbler Cup ~ Flip Top Spout Smoochin' with Betty. The Betty Boop 16 oz. Flip-Straw Travel Cup is 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 5 and up.