This It's a Boy Bottle Round Foil Balloon can be inflated with normal air through a straw/pump which you insert into the valve (will not float away).
They can also be inflated with helium (will float away) so they should be tightened to a weight. They last for a few hours.
Only 1 available, image is damaged on one side.
Tip: Do not overinflate the balloon, it can pop!