Make your next birthday celebration stand out with the 18" Birthday Blocks Holographic Foil Balloon from Betallic! This vibrant and eye-catching foil balloon makes a great addition to any Birthday Party celebration. It features a holographic design and measures 18" when fully inflated. The balloon ships uninflated and can be inflated with helium or air. Quantity discounts are available for this item, making it the perfect choice for larger events. This foil balloon is sure to make your special day a memorable one!