my husband gave me one when we 1st met and 12years later it is still as firm as when he 1st bought it.
Rating
Mylar Air filled balloons by: B x
I have a 19 year old air filled mylar balloon which is in exactly the same perfect state as it was in 1992 when I got it when I was just 6 years old!
Rating
small balloon in a stick with iloveyou on it by: Anonymous
have tiny balloon i know it's acrylic balloon. it's a small tiny balloon in a stick have it for almost a year now...
Rating
13 year old Mylar balloon by: Anonymous
I've had one that in a month will have stayed inflated for 13 years
Rating
IF IT IS AIR FILLED MYLAR by: icel
my husband gave me a 4inch mylar balloon almost 4 years ago and it is still the same size as it was just yesterday..
Rating
Air Filled Mylar Balloons by: Margit
Hi Marc,
I have heard of cases where a helium filled mylar balloon stayed up for more than 2 months: http://bastone.org/blog/?p=288.
So an air filled foil balloon will definitely stay inflated for longer.
But whether they would stay firmly inflated for years, I can't tell you. I doubt it though, as they will lose some air through the opening where you inflate them.