The ull size mattress was easy to  get out of plastic and unroll out of the box. I let the mattress fluff up  for a week . We put it into my full size frame and it was an inch short on the sides and on the top and bottom of mattress is was about an inch and a half too small! I'm glad not too tall because I wouldn't have fit. It is very soft, haven't slept on it yet, but it does have tendency to  bunch up on some spots.
I really think Mayfair and Nap queen really look into why it is not "true to size "