Helium Tank Balloon Time Kit 50 Each Total 200 Balloons (Pack of 4)

Perfect

This is 80% helium and it that makes a huge difference in floating longevity. Getting the last few balloons filled from each tank is like trying to fill a 64oz water bottle from a trickling faucet. And if you ever decide to return it, shipping is your cost, not theirs. I will not buy this again.

Did not have the amount of helium it specified.

Balloons were used for a prom. I don't know if helium tanks have an expiration date but our balloons did not last 4 hours before air started going out. We bought balloons from many different locations so it wasn't a default in the balloons. The the temp in the dance hall was perfect..

I had 150 balloons to inflate. This claimed I could inflate 200 balloons. Gross exaggeration. All 4 of these helium tanks inflated 120 balloon.... And of coUrse by then it was too late to get another.