Package Included:1Pcs 18" Black Heart Balloons (uninflated) 
Material: high quality aluminum mylar foil
Bright, Vibrant Mylar – Our premium quality balloons are crafted with a durable, ultra-shiny aluminum foil that maintains form without leaking or losing air.
Suitable: Inflate with helium or air,can be self-sealed, reusable balloons, do not use once to throw away
Perfect decorations for wedding, birthday, baby shower,valentine , festival and any other occasions