I wish I had read these before buying a mattress. Everything about mattress was dreadful. Foam pillowtopper cooks me alive each night, troughs forms in top & after following instructions turning consistently it did not even out as the booklet advised. It is do horrendously uncomfortable we both have had dreadful sleep since buying it. Many months of complaints to Bensons, they told us to "shake" it. If instructions for a £1499 mattress said shake it I would never have bought it. They say nothing wrong just natural settling but I bet no-one who works there sleeps so horrendously. It wasn't even cheap. Just walk away from this shop.