I used this as I rehabilitated from a quad rupture. Two years later my quad is back to 100%. I believe there are other exercises I could continue to do with the ball, but I really don't have the space for it in my new condo. The ball holds air perfectly. The ring base originally came with with elastic bands to do some additional upper body exercises - I may have one of the bands but never used them so not positive if both are available.
I do have the pump that came with the ball set, it's pretty rudimentary. I've only used it to inflate, as deflating is quite simple and fast with the pump.