Bring your Transformers party to life with this 35 inch large unique shape Transformers Animated Shape Supershape foil Mylar balloon! This Anagram balloon features Optimus Prime and is perfect for using in a Transformers themed balloon bouquet. Pair with some of our other Transformers foil Mylar and latex balloons for a great design! This balloon includes a self-sealing valve, preventing the gas from escaping after it's inflated. The balloon can be inflated with helium to float or with a balloon air inflator. Balloon arrives uninflated.