Slept on this new comfort zen 2.5 inch gel foam matress topper 4 lb density last night. Boy was I disappointed, was not soft at all. Couldn't tell any difference. HUGE DISAPPOINTMENT. I ask some of you who have one, is there a so called "break in" period? I've slept MUCH better in the cheap convoluted 1.5 inch foam toppers. I'm puzzled frankly. I challenge any of you to put 2 cheap 1.5 inch convoluted mattress toppers on your bed sleep on it, and compare. Much more comfy than memory foam.