Best cushion ever....
I am now retired but all my working life I had a desk job.  I would spend hours sitting.  Eventually I began to experience an ache in both my lower back and my butt.  Now they recommend that every 30 minutes one get up and move around.  Now I spend a good part of my day sitting reading.  I still forget to get up until my aching back and butt reminds me.  I have recently have been diagnosed as having stenosis of the lower back.  I began to look for a cushion that would give me some relief.  I did research and kept coming across this purple cushion.  It has become one of my very best purchases.  Now I can allow myself to forget to get up and continue to read for long periods without any back or butt pain.  I would have given this purple cushion five stars (It really is that good) but the cushion needs to be a couple of inches wider.  You are obviously looking for a good cushion or you wouldn't be reading my review.  Try this cushion.  I don't think you will be disappointed.  I am still trying to remember to get up every 30 minutes.  I know doing so is good for me.
Rating: 4 stars