Celebrate your Halloween themed party with these 11" round Spider Web printed latex balloons. The perfect balloons for your Halloween party, these 11" Sempertex party balloons are great for setting the scene! Mix these with a selection of our Halloween 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.