I got this ball to use as a chair to bounce my baby while I am holding him and at the computer desk. I think it is excellent and has helped with better posture without any thought. I also end up doing some excerises on it, just because it is there. It does not have the ultra shiny surface as is noted in the picture. Also, it is a pretty standard size I believe and is not too tall for me. I can sit comfortably, with my knees at 90 degrees and I am 5′4″. As for the reviewers that are not impressed with the pump: well, I don’t care. I don’t plan on deflating and inflating this thing again and again.
Rating: 5 / 5

The ball makes a fantastic “active” office/computer chair, at an extremely affordable price. I’m on it 6-8 hrs/day, and my back and legs feel better than with any other office chair I’ve used. I’m never going back!
Rating: 5 / 5

Good quality material and comes with instructions, sample exercises, an air pump and extra pegs.
Rating: 5 / 5

There’s nothing wrong with this fitness ball except that it’s NOT 65cm. It’s 55cm. They should take out their tape measure. So, it’s fine for smaller frames, but if you’re looking for something larger, it’s not your product. Of course, now I don’t trust the advertising. I mean, this thing even says “65″ on the ball and it’s just wrong.
Rating: 2 / 5

The ball seems like a very nice, high quality fitness ball, but TKO has an inventory problem — as others have mentioned.

I ordered a 65cm ball. The box it came in says 65cm, the ball has a sticker on it that says 65cm, but I measured it after inflating and it’s definitely NOT a 65cm ball: it’s a 55cm ball, which is one size down. I’ve re-measured it several times to confirm, and will be returning the product since it’s too small for me.

I’ll find another vendor to order my 65cm ball from, since I can’t trust TKO to send me the correct size next time, either. Definitely a disappointment.
Rating: 2 / 5