If you want TRUE BIL, consider the mattress is made up of components. I bought a mattress from a local company in my town that has a zip off top and all components inside can be exchanged. Say, for example, something happens and I need to move to a firmer or softer mattress, the company will come out and exchange the internal components for a mere $200!!! Replacing the pillow top is less than $100 for a queen. The mattress framing needs never to be replaced so that's a whole lot of waste kept out of the system. More people need to look at this type of system. PLUS I'm supporting local businesses.