Our motorhome came standard with Sleep Number Bed. To make that mattress tolerable a 3 inch Tempurpedic Mattress topper was purchased...still very uncomfortable and caused my shoulders to "go to sleep", but not me. I took out the expensive Tempurpedic and replaced it with this fantastic latex foam topper. We have been on the road for two weeks and it is the first time, I have finally been comfortable. Truly, latex foam is the best... Memory foam got all the marketing, but I think people are beginning to realize, it isn't the best. Case in point, memory foam becomes VERY firm under you and soon your circulation is compromised. Latex responds to your every move. The cover is very nice and any latex smell has completely disapated. I am seriously considering getting a topper for our Beautyrest that has a layer of memory foam. Don't buy memory foam...latex all the way.