This 20 Inch Deco Bubble balloon is supplied deflated for ease of packaging and can be filled with helium. Once inflated avoid exposure to extreme temperatures. Made of stretchy plastic that protects and display latex balloons preventing oxidation and making them last longer. Inflate deco bubbles with a latex regulator until wrinkles disappear from the seam and tie tightly. Deco Bubbles do not have valves and are designed fro use by balloon professionals. Ref: UTSG4500