A mattress (900) provides a user with three-dimensional firmness zoning, the mattress (900) cooperating with a mattress shell (720). The mattress (900) includes a plurality of longitudinally spaced, transversely extending resilient blocks (910) being independently movable relative to one another, an...http://www.google.fr/patents/US6687935?utm_source=gb-gplus-shareBrevet US6687935 - Mattress structure
