Ever have a balloon sink just after you inflate it??? That happens because of helium atom size compared to pore size in latex. The helium eventually leaks through, causing the balloon to sink. BUT, when you add a float extender, it coats the inside of the latex and helps prevent the helium from escaping! Linked on my Amazon Store front🥰 . . . balloons balloongarland balloondecor balloonarch balloonstylist balloonart balloon balloondecoration balloonbouquet