Celebrate your child s birthday in style with these 2 captivating Batman balloons. Made of durable foil material these medium-sized 22x25 inch balloons can be easily inflated using a hand pump or straw. The self-sealing valve ensures the balloons stay inflated making them perfect for decorating your party space. Featuring the iconic Batman character from the Avengers these balloons will add a touch of superhero charm to your little one s special day.