We bought this mattress to replace an old Tempur-pedic one. The changes made to the product in the past 15 years have made this a completely different feel all together. It's not even like the one we tried out in the store. This mattress is so firm that it's uncomfortable. We're waking up with more aches and pains than we went to sleep with. I don't like the "cooling" feature either. I don't sleep hot in the first place. So when I change positions at night and the mattress is cold, it wakes me up and interrupts my sleep. I don't like being cold, but I can see where this would be useful for someone who sleeps hot. It hasn't been quite a month yet and we want to give this a fair trial, as we loved our previous Tempur-pedic. It will be hard to return the mattress as it was so heavy that it was a beast for the delivery men to get it from the truck to the house and up the stairs. But if things don't improve, it goes back.