Champion Sports Dual Action Hand Air Pump - Fast Inflation for Balls, Bikes, Inflatables - Perfect for Sports, Camping, and Outdoor Activities

Excellent! I have always dreaded the ordeal of inflating an exercise ball. I once used the foot pump that came with an exercise ball, and it seemed like it took about 100 pumps and then it STILL wasn't inflated enough. By the time I was done, I was too exhausted to do any exercise!!This pump doesn't look like much and the fact that it's just plastic and flimsy-looking (judging by the Amazon picture), I wasn't expecting much. It was priced so economically, too. But using the hand instead of the foot made all the difference. It's a very sturdy pump, well-made and with very little effort and in a very short time, my exercise ball was fully inflated. I was amazed!! I am a 68-year-old woman and not very strong. I assumed that I would have to ask my husband to inflate the exercise ball for me, but I got impatient and decided to just start without him and voila!! I was done before he even came into the room. If I can do it, you can, too!I highly recommend this air pump.