Elevate your Father's Day or Dad's birthday themed party with our LoonBalloon Birthday General Balloons! This 18-inch round Thank You Dad For Everything! foil mylar balloon adds a heartfelt touch to the celebration. Perfect for setting the scene at your Father's Day or Dad's birthday party, this balloon is sure to convey your gratitude. Equipped with a self-sealing valve, it stays inflated longer, whether filled with helium for floating or with a balloon air inflator. Balloon arrives uninflated.