Not a good cushion.
I ordered this in Jan. of 2012 and was adm. to hosp. before it arrived.  I have been home for about 6 weeks now and have tried to use this cushion.  It is comfortable for the first 30 minutes but then bottoms-out and causes a great deal of pain/discomfort.  I am really disappointed in this cushion.  I do not recommend it to anyone.
Rating: 1 stars