Great bed for the price. After tons of research and waiting we finally went with the king size, "Serta" memory foam mattress. It is not really a Serta, but it feels great. I weigh about 195 lbs, and I like a firm bed. The top layer of memory foam conforms to your body shape, and kind of holds you in place, so you dont toss and turn as much. The bottom layer of normal foam is firmer and supports my weight perfectly. My wife is lighter than I am, and she loves it too.