Happy 17th birthday! What an exciting age! As you begin thinking about your future destiny, a 17th birthday blue holographic balloon will help you add splendour to your special day. Staring at the floating 18-inch helium foil balloon can inspire your creative mind; think of Isaac Newton! Holographic balloons are eye-catching to everyone who attends your party. You can buy one or two as a minimalist decoration, or purchase many balloons and attach them like bunches of flowers around the party space.