These balloons are not meant to be inflated with helium.
These balloons are to be inflated with normal air and they do not have to be heat sealed. These balloons come with an auto seal function and it can be inflated with more air should air begin to escape after a few days.
These balloons can stay fully inflated for at least 24 hours.
They can be pasted on the wall with simple adhesives or double sided tape. It can also be hung on the wall using a string.
*Note: All our photos are taken in house with the actual products. However, actual colour may vary from the product photos, and may also vary from the PC/Mobile/Tablet's screen due to monitor calibration.