First, the brand on the box lead me to think I received the wrong item.  I called customer service right away and was informed that it was correct.   I’m doubting it.  I bought this
topper hoping to correct a horrible Temp-Pedic mattress but it gave me zero support and I still sunk in the mattress.  It expanded to 4 inches almost right away but I waited 48 hours just like the instructions say to 
make sure.  I am beyond disappointed and 
feel that I do not have what I ordered which had amazing reviews.  The one I received had one really bad review and that is why I had NOT CHOSEN that one.  I feel this was a bait and switch move on WAYFAIR’s part.  Will think twice before ordering again.