Celebrate your birthday themed party with these 11 inch round Birthday Ballerina Slippers printed latex balloons. The perfect balloons for your birthday party, these 11 inch party balloons are great for setting the scene! Mix these with a selection of our birthday foil mylar balloons for the perfect balloon bouquet clusters. The balloons can be inflated with helium to float or with a balloon air inflator to hang around the party area like a balloon arch garland. Balloons arrive uninflated.