Qualatex is known for making the world's best balloons. They are beautiful, easy to tie a knot on and hold better on both air and helium. They are in the size 11 ", measuring 27 cm. In diameter.

Fill it with ordinary air and hang them up for the party, put them if necessary. on a black balloon stick .

You can also fill them with helium and let them float ( there is enough for all 25 balloons in this helium tank ). The Qualatex helium balloons typically hover somewhere between 18-24 hours. If you want to extend the hovering time, you can treat the balloons with hi-float .