Betetary 86398 Sparkly Today Tomorrow Forever Foil Mylar Party Balloons, 18" Multicolor, Pack of 1

Comes with a self-sealing valve - The self-sealing valve prevents gas from escaping after inflation. Filled with Helium - Use a foil balloon inflator to inflate the balloon with helium. Balloons are not inflated. Mylar/Foil balloons. Balloons should always be weighted down and never released into the air. Always dispose of balloons properly.