I fill up my entire room with many balloons using my balloon pump so that I can swim through them. I wanted to inflate more but my pump got hot and popped three in a row before I realized it was too hot. I inflate a couple with my mouth after my pump can't do any more, then swim through my all of my balloons a bit. These are mostly 16-inch balloons, however there are some 12-inch, 14-inch, 17-inch, and a 24-inch balloon as well. Most are tuftex and unique brand.