Trideer Exercise Balls Physical Therapy, 9 Inch Pilates Ball Between Knees for Physical Therapy, Mini Exercise Ball - Yoga Ball, Small Workout Balls for Core Strength and Back Support

Well, it meets or exceeds expectations. The size is right, the material is good, and it holds air. I'm not sure what it could do to excel, really, but it certainly delivers what it should. It was nice that they include a little tool to pull the plug out of the ball because it's quite tight (that's a good thing) and my fingernails aren't strong enough to pull it out without damage.

The product seems OK. I've only used it for a few days and it already needs more air. The instructions are ridiculous. I did figure out how to "blow up" the ball. It isn't intuitive that you need to do that. So take the straw, insert it into the opening and blow. The next challenge is getting the plug in place without losing air. Good luck with that. It is a 9 inch exercise ball. Doesn't smell gross. I have been able to use it for my PT exercises.

I use this for shoulder mobility exercises and it has held up well. It slowly loses air, but that is to be expected.

An excellent product for the elderly , for physical therapy-

Does not come with a pump. Instructions say to call customer service if you don't get a pump. Sounds like an ongoing problem. Probably wouldn't matter since there is no inflation valve, just a hole. It came with 2 straws and 3 plugs. I had tp put the straw thru the hole, blow up the ball then quickly cover the hole with my finger and then insert one of the plugs. Air is escaping during the process so I ended up with an under inflated ball. It will work for most exercises as long as you don't need a firm ball.