DIdn't work for my sciatica
I think I was able to test this cushion under the best circumstances.  I am a university professor and the chair in my office is so awful on my sciatica that I can't sit down for more than two hours.  This is the reason I bought the cushion but I happen to receive it in the mail right before I went on a business trip to correct national standardized high school exams -- sitting down every day for 7 days, 8 hours a day.  What a great testing ground!<br /><br />The first day I used the cushion, my lower back hurt so bad that I was almost in tears by 3pm (I had been sitting and working since 8am with two breaks). I stretched out to reach a pencil on the table just beyond my fingertips, and the pain jabbed me like a mad man.  I tried to do a side-bend to reach my water bottle on the floor and ugh the pain was like lightning. The next day, my back didn't hurt as badly, but while I was talking to some colleagues, I mindlessly did waist-twists for 5 minutes.  I wasn't sure if it was the waist-twists or the cushion, but I didn't want to chance it so I did the waist-twists every day.... except for one day when I was running late.  I didn't do my "exercises" and the cushion was unforgiving.  The stabbing pains were back with a vengeance.<br /><br />Now I'm back at my office and using the cushion.  I was able to sit for two hours and while my back still hurt, I admit that it didn't hurt as much. Normally after two hours I can barely stand up straight, but today with the cushion, it wasn't as bad.  So it's "okay" but I'm going to have to invest in a very good office chair.
Rating: 3 stars