My brother is 6’2” and around 210 pounds.  I bought him the 4” full size foldable mattress topper to put on top of my fold out futon.  He opted to leave it on the floor and after a week of use says that it is plenty comfortable.  When he first arrived for his visit he had some neck pain from traveling.  Even with the neck pain he said the mattress topper was fine and he didn’t want to put it on the fold out futon.  I’ll update my review after my brother completes his visit and I give it a try.  For now, it is nice to report there were no odors to dissipate upon the first week of use.