Does exactly what I wanted when I bought it.  It came in a convenient-to-handle sized box, and after following
the instructions & letting it lay flat for at least 24 hours I put it on my bed & had the best sleep I've had in
a long time.  There was an odour when it came out of the box, but after letting it flatten & air out for the 24 hours
in the instructions, the odour almost totally dissipated.