Very wide seat cushion-doesn't fit all chairs
I purchased this for relief from ischial tuberosity bursitis.  I think it would help but I had no idea this cushion was so wide. There are several models of the purple cushion.  I thought the "ultimate" was just the best one. No, it is very different from the others.  First, it is 22 inches wide in comparison to the other cushions at 18.  The cushion wouldn't fit in my dining room chairs or office chair.  Second, there is an indentation in the back that is supposed to help with posture.  Maybe it does for some people, but for me it caused stress on my SI joints and more back pain.  I'm going to return this one and get the "Double Seat" purple cushion.  But you need to also note that both the ultimate and the Double are two inches deep.  So if raising you up two inches will prevent your feet from touching the ground, then that will be a problem also.  In that case you may need the "royal" purple cushion.  They just don't describe clearly the differences.  A comparison chart would be very helpful.  I did a chat session from the Purple website and even their customer service didn't seem to understand the differences in models.
Rating: 2 stars