An Anal Balloon is a blow-up butt plug, which can get pumped up to three times the size.
The blow-up butt plug is small and sleek and easily glides when inserted in. With the handpump you can pump it up so that it expands inside of you. Pump it up to the size you desire and notice the very satisfying feeling you will experience.
You can easily close the air by pressing the side of the pump.