Wanted to use it for a week before leaving a review!  So here it is. 
This topper is comfortable, sleeps cool (a lot of reviews on these types of toppers complain that they are hot)....this is not the case with this topper.  Took only a few hours to expand to full size and I noticed only a slight odour that was gone by night two or three.  I have also found that this topper is easy to get up and out of (again, a common complaint with toppers).  Have also noticed that the pain I was experiencing in my left hip has improved at least 50% in just a week.....so perhaps I can contribute this to the topper as well.    
To summarize:  very happy with my purchase, it arrived earlier than wayfair originally estimated, and My wife and I have been sleeping much better!  My advice, stop wasting your time reading through the endless reviews and buy this topper.  You won’t be disappointed!