Celebrate in style with this set of five 17-inch Happy Birthday mylar balloons. These vibrant, durable balloons feature bold lettering and festive designs perfect for birthday parties, decorations, and special occasions. Mylar construction ensures long-lasting inflation and a professional appearance. Easy to inflate with air or helium, these balloons add instant cheer to any celebration. Ideal for creating eye-catching balloon arrangements, backdrops, or standalone displays. Set includes five balloons ready to brighten your event.