All memory foam mattresses must be put on top of a flat, firm, spring-less base. You must not position one on a box spring frame - in reality, putting a Tempur-Pedic mattress on one will void the guarantee. Likewise, while you can use a waterbed frame, it is inadvisable to do this, as this kind of bed frame is recessed, which prevents ventilation.<br> <br> <br> <br>