felecia187 balloons are large and so is the lettering ha ha joke get it , OK so first you need a helium balloon take the helium end off the balloon now get a tiny glow stick and break it so that it starts to glow , now place the tiny glow stick into the balloon , now put the end back on to the helium balloon , then fill the helium balloon with helium , now put the string on it and you now have a glow in the dark helium balloon , now if you make a whole lot of glow in the dark helium balloons you can have a glow in the dark helium balloon birthday party for your kids , and you will be the greatest parent ever awesome , enjoy .