Bring your Sonic the Hedgehog party to life with this 18" round Sonic The Hedgehog 2 foil mylar balloon! This Anagram balloon features Sonic, tails, Knuckles, and Shadow and is perfect for using in a Sonic the Hedgehog themed bunch of balloons or room decor. Pair with some of our other Sonic the Hedgehog 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.