Not wide enough
I'd give it a five, since it is comfortable and does help with pressure points -- but it needs to be wider.  Not everyone in this world is skinny as a stick; some of us were born with a wide chassis, and it doesn't do the job if you can't fit both butt bones onto the pad (I'm a 5'10&#34; woman with the bone structure of a medium sized man -- thanks, Dad).  The comfort is compromised when you need to sit in a way that isn't relaxed, just to try to keep yourself perched on the cushion.  At this price, I should think making it at least a full 20 inches wide would not be asking too much, and it would make the pad much more useful for a wider range of body types.  It makes a good back cushion, but not so good for where I need it the most.
Rating: 4 stars