Package: silver number 20 balloon, straw<br><br> Number 20 balloon is self sealing, when the inflation is completed, please put the seals to pinch flat, the balloon comes automatically sealing glue<br><br>Foil Helium balloon, Balloon can be filled with helium or air, both are ok! Helium can float<br><br> The unfilled state balloon is 42 inch, after filled with gas, it is 40 inch<br><br> Silver balloon is fashion and nice, it's a good idea for birthday party and festival decoration <br><br> Material: aluminum foil<br><br> <b>WARNING: </b>CHOKING HAZARD- Children under 8 yrs. Can choke or suffocate on uninflated or broken balloons. parents supervision required. Keep uninflated balloons from children. Discard broken balloons at once.