Bring a touch of adventure to your next birthday party with this set of 10 Treasure Island Pirate Mylar Balloons. These 18″ balloons are made of Mylar and feature a pirate ship sailing off into the sea, perfect for any pirate-themed party. With 10 packages per case and one balloon per package, you can easily get enough balloons to decorate any space. Our discount pricing on bulk quantities makes it easy to find a great deal for any party planner, catering service or home party planner. Bring the excitement of a pirate adventure to your next birthday party with our Treasure Island Pirate Mylar Balloons.