<https://omgjump.com/product/18-happy-birthday-mylar-foil-balloon-31/#product>
<http://schema.org/description>
"This balloon has a self-sealing valve that prevents the gas or air from escaping after it is inflated. The balloon can be inflated with helium or any balloon air inflator. The balloon is sold uninflated. Enjoy any birthday celebration with these 18” foil balloons as a bouquet gift or as a general party decoration.\r\n\r\n(price per Dozen)\r\n\r\n&amp;nbsp;"
<https://omgjump.com/product/18-happy-birthday-mylar-foil-balloon-31/>