Well, I read all the reviews and decided to purchase the 75cm ball, figuring it would be smaller than advertised. NOT! This has the little foot pump, and my 82-year-old mom pumped it up to its full 75cm without effort. So, I had to buy the 55cm version! But this is one very nice fitness ball! It is very well made, and we had a 250 lb. person sit on it, and it held him up just fine.

Rather than pay return shipping, I'm donating it to my 6' 1" brother!

I bought this exercise ball several months ago and have been using it everyday. I am pleased that I have not noticed much in the way of deflating, which is a very good thing. It would appear that most of the exercise balls on the market are pretty much the same grade of material. I had a problem when I first received the item in that it was supposed to come with 2 pins. I only received one. I contacted the seller and was told they would send out a replacement pin. It never arrived. On the second request the company did send the missing part. The part I didn't like was the hand/foot pump provided is manual so inflating takes forever. When I re-inflate (which I haven't done yet), I would definitely use an electric pump. Overall the quality of the item is good and the company turned out to be reliable also. A good buy.

A good size and keeps inflation well.

I bought one of these (75cm) a couple years ago and my recently cat popped it. Ordered the replacement 75cm ball. That is the size it says on the box, however what was *IN* the box was more like 55cm. Maybe it can get filled more and it's really 65cm, but I don't think it's even that. They obviously have had a problem in manufacturing the correct size.

I've never owned another gym ball so I don't really have a basis for comparison but here is what I've noticed. The ball does not stay round but deforms (not horribly) to a less than perfect ball – out of round. The air plug is really hard to remove when attempting to add more air to the ball. The ball seems to need to have air pumped in about once a week – I use it 6-7 times a week for about 25 minutes or so. The pump works fine and the exercise booklet has some good exercises to try. I've had the product for about 3 weeks and am seeing some results from my workouts specifically in my upper body and ab sections. I think if I were to diet I would be looking pretty decent. Over all I am pleased with this product.

The ball and pump are a good buy for the quality and price. My husband was excited to see that I had purchased this. He plans on using it when he is working out. It didn't pop when he sat on it so I would say it is sturdy!
This was very easy to pump – my three year old was able to pump the ball full of air on his own. Glad that it came with a pump since we only have an air compressor and not a pump. I'm not a fan of using the air compressor so the pump was handy.
I originally purchased this for my infant son who has torticollis. One of the recommended exercises is to have the baby on his stomach across the top of the ball. His head and arms should be hanging off of the ball, forcing him to straighten his neck. Unfortunately the therapist didn't tell me what size ball to purchase and it didn't occur to me that a ball could be to big. That was the case with this particular ball – it was too big for him – it was so wide that it wasn't forcing him to straighten his neck.
Since we won't be able to use this ball for the original attended purpose I am glad that my husband was able to find a use for it.

I've got a spot in my boat cover where it sags and collects rain water. I place the 75cm version on top of a bucket to help hold it up in the spot. While this ball does lose air over time, I can tell you that it is super tough! On multiple occasions I've roughly bounced it around on my gravel driveway when playing with my kid. I've let her jump up and down on it (while I hold her hands). I've played catch with it by forcibly throwing it at a concrete wall to have it bounce back. We've used it for massive kickball. I've bounced up and down on it pretty hard and I'm not a little guy. This thing is 5 stars TOUGH! The rubber seems pretty thick on it, so I'm sure It'll be around for quite a few years.
When I first got it, the plastic/rubber smell coming from it was pretty bad. But it subsided after a couple days, and after being outside for the last few months it's pretty much gone except when you have your face right up next to it.