... approved,Flammability passed auto inflated balloons,auto inflatable balloons,Self-inflated Balloons,self-inflating balloons,-1.OEM round Shaped Mylar ,Foil Balloons ... balloon . Size: 18 inch (nylon Mylar material) Long lasting and self-sealing , balloon for custom imprinting come in wide rangeof colors ... products are offered as examples only and not for sale . self-inflating foil balloon with stick