Bought a king sized sleep number with adjustable bases for $130 at an auction. We HAD to upgrade our foam mattress (not memory foam) and I spent months looking at what would be best. Jumped on this because.. sleep number.. duh right? Came with all of the original receipts, found out it’s from 06. Still works great and is amazing for me and my fiancé who are very different sizes. And it fits our very clingy dogs too