Trideer Exercise Ball (Multiple Color), Yoga Ball, Birthing Ball with Quick Pump, Anti-Burst & Extra Thick, Heavy Duty Ball Chair, Stability Ball Supports 2200lbs

Ball does not reach optimum size . Used it for 10 weeks . Company needs to replace this

I'm 5'10", so I ordered the Large from the sizing chart, color B#Purple&White. It took about 15 min. to inflate taking my time with the foot pump attached, while watching the football game. The enclosed tape measures has 0cm-100cm markings on it to tell you the proper height of the ball for inflation. (about 25.5" for 65cm) Once inflated, I released some air until it was the perfect size for my legs to be bent 90 degrees at the knees while sitting on it. Now its not too hard and a comfortable amount of softness to it for doing my exercises. I love the color. It looks just like the picture. The size, shape and color are true as advertised. It seems to have a nice thickness to it, so I expect it will last. I would recommend!

The pumping up with the foot pump took a while, but it worked and it's nice not having to go find a pump for it. The ball is staying inflated well and is being used by my 6'4" 195lb son as a chair while he's gaming in an effort to get in some core stability work.

Fantastic product I ordered another just to have around after using this one for just 2 days. THRILLED w/ this product. I put "easy to inflate" at 4 just cuz the material is super dense... The best quality yoga balls are not the easiest to in inflate... ones that inflate super easy are usually cheap material and too bouncy for proper use...

Love the color and the ball seems to be good quality and for a great price. Very happy with my purchase. Perfect size for a desk chair. Based off other reviews I decided to order a size up and very glad I did. I'm 5'4 and ordered the L (65cm). Also, inflating the ball was very easy.

This is the ball I use daily as my desk chair. I ordered the 85cm because I wanted to sit at the same height that I did when I used a regular desk chair. I am 5' 10" tall and I'm a plus sized woman so a smaller ball just didn't allow me to sit high enough. This has been perfect for that purpose. I give it a little boost of air on Monday mornings (maybe 4 or 5 pumps) and then I'm comfortable for the entire week. I bought the mint green and it is such a pretty color. I cover it with a soft blanket at the moment because it is winter and I don't keep the temperature super high in my house so the ball gets a little chilly but that won't even be needed in the summer. I love bouncing while I think about what I'm doing during the day and the ability to stretch while I'm working. I also had some pretty bad knee pain from the way I sat in my regular chair and this has alleviated that completely because I maintain better posture. Getting on the ball and sitting close enough to the desk took a little figuring out at first but after the first time, it was easy. I highly recommend this ball.