• Material of Number Ballons is foil, color uniform,spherical beautiful,safe and non-toxic.

• This helium number balloon suitable to inflate with both helium or air.You can easy to inflate using the straw or an air handheld pump.One use of helium inflated balloons usually can last around for weeks.
• This balloon is self sealing so no tying with fingers required and After inflating,Please repeatedly pinch the inflator,To ensure that no air leaks.