This Unique Party Prism 2nd Birthday Foil Balloon is made of foil and measures 18 inches in width. It features a prism design with hearts and text, perfect for a 2nd birthday celebration. The balloon is supplied deflated and can be filled with helium. Please note: Avoid exposure to extreme temperatures. The size guide image relates to standard sizes only; brand sizes may vary. Group images are not representative of quantity sold. This product is usually dispatched within 3 working days and delivery is typically completed in 3-5 working days.