I was taking online classes from 9 - 5 so I was having to sit for long periods at a time. ru-vid.comUgkxEhgucmXpcAGYh8fatGFEnOK2V97VIwhG After the first day in a regular table chair, I thought about an exercise ball and ordered one that night. It came the next day! My hips, legs, back and butt couldn't have been happier! I'm almost 5'11" and I ordered the largest size and it was perfect for me. I also have RLS (restless legs) and this helped so much.Pumping it up was a little challenging and definitely gives you a good arm workout, (I'm a 62 yo woman) but it's very doable. Getting the tape centered with the hole to inflate it and then getting the pin back in was also a little tricky. But I love my new "chair" and I love the torquiose color. Hopefully it will also get used for exercise. 😁