Purchased February 12 and still floating at FULL height on April 18!!
I remember when they used to last a week if you were lucky, and now I even have a friend who also still has one fully inflated? Even my cat Cal-Jo is totally mystified and slightly in awe!
It's just a shame our anniversary is late in December or I could have given it again, but then ya never know judging by the total lack of deflation thus far! ;-)
Anyone else out there got an everlasting helium balloon?