Really comfortable!  When it arrived, I unpacked and read about it as I saw the air really inflating mattress pad.  Then I washed in cold water, put into dryer that would accommodate  a queen size,  low setting.  I removed before end and allowed to finish drying for another day and put onto bed.  Enjoying comfort.  Only complaint is sides do not completely cover 15" thick queen mattress.  I am puzzled but am keeping since do not want to go thru return hassle.  The hypoallergenic factor is very important and a plus with this one.  (Lottie)