Large and impressive, this disco ball balloon can be used with both helium or air, and is a professional decorator balloon. Please note this balloon really needs to be inflated with a nozzle from a balloon pump or inflator (This could be done with a straw but can be tricky). The holographic effect is really sparkly and they do look great, making them a cheap alternative to using real mirror balls, and filled with helium they make great table decorations! Large holographic glitter ball foil balloon15" (38cm) diameterInflates with air or heliumHidden self sealing valve for use with balloon nozzleCan be deflated and re-used with care