This foil balloon is helium quality and suitable to inflate with both helium or air. This balloon is self sealing so no tying with fingers required and After inflating,Please repeatedly pinch the infiltrator,To ensure that no air leaks.Balloons are easy to inflate with a straw or handheld pump, easy to hang on the ceiling or fixed on the wall with tape, and digital aluminum foil balloons are easy to inflate and deflate.50pcs/lot 32 Inch Red Black Blue Rose Red Number Foil Balloons Digtal Helium Birthday Wedding Party Suppliers Size:32 inch Color:rose red /blue/red/black Package:50pcs balloons These are fantastic for birthdays, weddings and events decorativce .Have a try to give your lovely a surprise !The balloons can be filled with helium to float or filled with air to attach to any surface, the balloons have self sealing valves.Once inflated the balloon will stay up for over a week.The balloon will come flat and need inflating.The balloon sold without Helium.Attention :The number 2 & 5, 6 & 9 ,2 & 8 is similar before inflating .Hope you can accept.Warm Tip:1.Please allow little differs due to manual measurement,The above dimensions are only for reference. 2.Please be reminded that due lighting effects, monitor's brightness/contrast settings etc, there could be some slight differences in the colour tone of the website's photo and the actual item.