I bought this a couple of weeks ago and the only thing I can say is "WOW"!. Since putting the topper on my mattress, my back no longer aches and I've been getting a good night's sleep. In addition, I'm not snoring as much as I was before. I was a bit concerned about buying it because of the low cost and because of it being "egg crate" foam. However, it's very comfortable. I followed the directions on unrolling it and used it that night. I'm going to buy another one for the bed in the guest room.