18 Inch Display Size: The 18 inch / 45.72 cm balloon size gives this decoration set a clear focal point while the detail extends the visual line for backdrop styling Celebration Ready Scenes: This foil balloon decoration set works for birthday parties, wedding setups, outdoor celebrations, and photo backdrop areas that need a statement accent Single Decoration Set Pack: Each order includes 1 decoration set, making it easy to stage a coordinated backdrop accent for party, celebration tables, and photo corners Flexible Decorating Accent: The reflective foil finish and detail blend into celebration, entry displays, dessert table backdrops, and photo booth layouts Reflective Party Backdrop Accent: Aluminum foil balloon pieces and long accents add height and layered texture that helps party look fuller in photos