On May 27, 2009, our Serta Cromwell mattress arrived much more rapidly than we anticipated. Since the price of our purchase included the setup, we were able to use it that night. To this exact date (July 27, 2009), my spouse and I have slept on it for two months. The lustrous silky-white woven patterned fabric which covers the sides of the mattress set is attractive and appears reasonably sturdy. In addition, the mattress lives up to its designation as firm. Yet, we have never slept on the mattress proper. We added a four-inch memory-foam top, also made by Serta, which we purchased at the same time as the mattress. (The rolled memory foam arrived the day before our mattress which gave us time to prepare it for use.) The firmness of the mattress gives the memory-foam top adequate support and in combination, the sleep we receive cuddles and soothes. I have annoying back pain and the need for comfortable rest is what prompted me to buy this mattress. So far, I am satisfied with both price and choice.