Make your loved one's birthday extra special with our LoonBalloon Birthday-Over-The-Hill Balloons! This 18-inch round Older Than Dirt foil mylar balloon adds a touch of humor to the celebration. Combine it with other birthday balloons to create a bouquet cluster for a unique gift or use it as a decorative accent at the birthday party. Equipped with a self-sealing valve, this balloon stays inflated, whether filled with helium or a balloon air inflator. Balloon arrives uninflated.