Material: Foil; Net Weight: 1gIt is beautiful and unique visual effects ,which is the best festive decor.This ballon is easy to keep .It can be stored for years and reusable.All balloons are also self sealing.Air-filled Balloons for Birthday & Party & Anniversary.Can be repeated use, convenient inflation and deflation!This is a digital balloon. It is good for party wedding.It is beautiful and unique virsual effects, which is the beat festive decor.The balloon is thickened and can float when filled with helium. You can use the straws to suck out the helium and reuse the balloons.Alternative number shapes are 1, 2 , 3 ,4 , 5 , 6, 7, 8, 9. 0.