Loved this mattress until it started noticeably sagging where we sleep after ONLY A MONTH of sleeping on it. We are not an overweight couple. The top foam just started losing its shape and not springing back after such a short time. Spent forever pouring over the reviews on this one (it has great reviews), and genuinely enjoyed it - but I can’t imagine what it would be like after a few months time if it’s already sagging after ONE month. Was hoping to have it for at least a few years. So frustrating! Getting it returned already ( So wasteful on so many levels.