It truly is quite amazing, but there are few disappointments
I have a skinny butt and suffer from sciatic nerve pain that often runs down my right leg, making sitting for even minimal periods often very difficult.  Despite the ride and comfort of my luxurious Lexus, with it's gazillion air-conditioned seat settings, I was finding that even a freeway drive of even one hour was unbearable.  This cushion lives up to it's promises.  It truly is quite amazing, but there are few disappointments, I found.  First of all, the dimensions are NOT as stated.  Mine measures 17 x 14.5 x2, not 18 x 16.  I guess they cover themselves by stating &#34;approximately&#34;.  Unfortunately, the dimensions are what I take issue with.  The width (front to back) really needs to be about 3 inches longer.  When placed on my already too shallow car seat, a few more inches below the thigh to the knee would make a tremendous difference in comfort.  And again, I'm a small person.  As others have stated, don't expect a big ol' cush of a feeling.  The Royal Purple is soft, firm, and truly supportive.  It works well on my office chair, too, but alas, should be about 3 or 4 inches longer in depth from front to back.  I agree that this item is overpriced.  After purchasing through Amazon, I learned I could have bought it at Bed Bath & Beyond and saved $16 by using their ever-plentiful and never expiring 20% off coupons!  So, hey Amazon:  You owe me sixteen bucks!  :-)
Rating: 4 stars