This Sparkling Birthday 100 Holographic 18" Foil Balloon is the perfect way to celebrate your special day. The balloon is made by Anagram, a reputable and reliable brand, and is two-sided. It is self-sealing and already inflated with helium and ready to be hung up. The size is perfect for any room, standing at 18 inches. It is the perfect decoration to make your 100th birthday party extra special and will be remembered by everyone who attends.