Trideer Yoga Ball Exercise Ball for Working Out, 5 Sizes Gym Ball, Birthing Ball for Pregnancy, Swiss Ball for Physical Therapy, Balance, Stability, Fitness, Office Ball Chair, Quick Pump Included

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!

I was suffering from daily back soreness and significant stiffness, the result of an injury from about a year ago. One particular stretch on this ball reduced my daily back pain and stiffness by about 80-90%. I never imagined I could benefit so greatly from one stretch. This ball literally changed my life.

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.

It supports my plus size body and is easy to set up. Does lose air over time.

very solid. I bought a yoga ball desk chair and didn't open it timely. Hubby opened and assembled it in my absence, and either 1) it didn't come with a ball or 2) he accidentally tossed the ball out with the packaging- I bought this to replace the ball in the chair receptacle. It works great! Comfortable and easily inflated with hubbys air compressor.