It's a big son of a gun. Not on the bed yet, trying to get it washed and dried. Seems to be very comfortable and thick.  I think I'm going to love it. Ok. Slept on this mattress pad 2 nites. Best sleep I've have had in a year. Just a little hint...when you read the washing instructions, it says to use an industrial washer, do it. I have an over size washer and it was NOT a good idea. Other than that it's great.