LOONBALLOON Farm Animals Balloons, 37 inch TRACTOR – yellow, Accent your construction themed party with this 37in. large unique shape Tractor – Yellow foil mylar balloon. The perfect balloon for your construction party, this 37in. 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. 37in. Tractor – Yellow Foil Mylar Balloon