This mattress replaced a king-sized mattress that my wife and I have had for at least 10 years. We had used a foam topper for several years, which helped, but even so it was still quite hard. In addition, we have had the opportunity to sleep on a variety of mattresses over the past several weeks as we traveled to visit friends and family. One mattress similar to the one we purchased made us feel as if we were sunken into it, and even though it was soft, it was uncomfortable. Another friend had a pillow-top mattress which left hard spots on my hips and shoulders. In contrast, this mattress is very comfortable. It is somewhat unusual in that we feel as though we are sleeping on top of the mattress, rather than sinking into it. However, we both sleep very comfortably, with no hard spots in the usual places. Movement is easy, as we don't feel as though we are fighting to move. I have been very pleasantly surprised with the level of comfort we have experienced, and give it my highest recommendation.