Accent your Father's Day themed party with this 33" large unique shape Coolest Dad Cooler foil mylar balloon. The perfect balloon for your Father's Day party, this 33" Betallic party balloon is great for setting the scene! 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.