Details: Make a bold statement at your milestone birthday celebration with the Black & Gold 50th Birthday Mylar Balloon. This 18" round balloon features a fun gold and white striped design overlapped with a large 50 and black border. Perfect for event planners, caterers, and home hostesses alike, this balloon will coordinate tremendously with other 50th birthday theme party supplies and decorations. With discount pricing, this Black & Gold Metallic Balloon is a great way to bring your 50th birthday theme to life. Get one Black & Gold Metallic Balloon 18", '50 for this price. Approximate Dimensions: 18 in.