Memory Foam Orthopedic Design cushion for tailbone pain

I have several of this type of cushion to use at my desk as well as in my car.  When sitting for long periods, my tailbone becomes extremely painful.  This one in particular is very nice.  Most are a little harder and not as comfortable as this one.  I was very happy when I got this one out of the package and felt how forgiving it was.  I am replacing one of my firmer ones with this one and so excited to do it.  Wow!  Love it!