Had more SI (sacroiliac) Joint pain when using the seat/back combination that without it.
I can only rate the Obus Forme Ergonomic Seat for its short term performance in the purpose for which I purchased it after several recommendations.  I bought this product to relieve stress on my SI (sacroiliac) joint in which I have developed sacroilitis or the inflamation of the SI joint, and the low-back pain associated with it.  I found several recommendations across the Internet stating that this product and the associated Ergonomic low-back seat back could help.  I received the seat and the back one day and tried them out in my computer chair at home and was very uncomfortable.  The next day I tried them together in my car seat and in addition to the seat adjustments I had to make for the extra height and thickness, I was in more pain after my drive to work WITH the cushions, than without them.  I returned them both the very next day, and bought a 2" memory-foam dining chair cushion for $13.00 which works better for my pain. I'm sure it probably would suit other purposes, but definitely not for my SI Joint pain!
Rating: 1 stars