TOTEM Star Foil/Mylar Balloon (14 pcs)

Self sealing and so you don’t need to knot them. When filled with Helium, they float.  Foil balloons can also be air-filled. 

Foil balloons ( also called Mylar balloons)  are made of a thin , continuous film of metal over nylon. These balloons are less porous and remain inflated several times longer than latex balloons.