Did What It Promised
I was a bit skeptical but decided to take a chance on the Purple Ultimate Seat Cushion to help relive pressure on my tailbone from having to sleep sitting upright due to breathing issues. It definitely helps.  Does it cure the problem?  Of course not. But the cushion does relieve much of the pressure and provides a high degree of comfort.  For me it's worth the cost and when it's time to get a new mattress I will certainly be looking at my Purple Mattress options.
Rating: 5 stars