Item Description All the balloons are checked and flat packed individually. Do not expose the balloon to extreme heat as it may cause balloon to burst Do not use near overhead power lines or exposed wiring. Easy to inflate: You can use a balloon pump on these or even use a straw to blow them. Please note 1.The 6 and 9 balloon; the 2 and 5 balloon are the same (just switched  upside down) The 8 and 0 balloon also looks like a S and U before it is inflated. 2.When the balloon is inflated, it is recommended to fill 80% full and  keep a little elasticity. If the inflation is too full, the balloon is  quickly leaked or directly detonated. 3. The balloons can float if it is filled with helium. You can hang it up with string or tape it on the wall as well. Package: The number you choose 1x  straw(Free) in case to inflate with normal air