My former mattress was about 10 years old, and still in pretty good shape, but I knew that I'd need a new one soon. Quality was my main priority, so I looked into Stearns and Foster. I found the Lux Hybrid variety intriguing. While I was very interested in the advantages of a memory foam mattress, I was concerned about heat retention. I'm what is known as a "hot sleeper". The Lux Hybrid does contain memory foam, but it's designed with coils, which allow the mattress to stay cool. Best of both worlds, right? Absolutely! I've been sleeping on my new Lux Hybrid for a little over a week, and I'm enjoying cool, cozy comfort all night long! I awaken refreshed, ready to hit the gym and start my day. If you're thinking about memory foam, but are concerned about being hot, please look into this mattress. It really will keep you comfy and cool!