Over time, I have had the opportunity to collect a few pumps! 4 to be exact! I have a hand pump, an air mattress pump, an electric pump and a bellows foot pump! I wanted to see which one pumps up my stomach the best! I'm looking to figure out which one is my favorite! I use one at a time by inserting them into my ass and pumping away. I model off how full each one makes my belly and then come back to model off the next one once my belly has gone back down. I do figure out my favorite. Now which one is yours?