Looks like this: http://www.productreview.com.au/p/ikea-sultan-tafjord.html

A 6cm-thick layer of memory foam moulds to your body, improving blood circulation to both muscles and skin and enabling your body to relax more fully.

Easy to keep clean since you can remove the cover and wash it by machine.

Used for 3 years, no new-mattress smell.

Self pick-up in Palo Alto.