Turn your party room into the Bat Cave with the help of these Latex Batman Balloons. These balloons come in assorted colors (black yellow blue and silver) and measure 12 inches when fully inflated (they ship uninflated). You can fill them using either helium or air. Use these balloons to create a balloon bouquet for your mailbox the dessert table and more. These Batman balloons are a must-have for any Batman birthday party. For a birthday that is Dark Knight approved combine these balloons with the rest of our Batman themed party supplies.