These Balloons are Helium quality and will require helium filling if you require them to float otherwise if you wish to hang them or tie up, you can inflate with air.
Balloons are 12" when fully inflated and come with full instructions.
They offer a standard float time of 16-20 hours when Helium Filled.
Ribbons and weights can be purchased separately.
Please note, for safety reasons, when air filling a balloon a balloon pump should be used not your mouth.