I replaced a 2-inch topper with this 4-inch in hopes of not being able to feel my mattress quite so much. I can still feel my mattress because the mattress is considered 4-inches because of the peaks in the foam. However, it is very comfortable (and definitely better than my old topper). I like the fact that I am cool and comfortable during the night without heat flashes as with the old topper. The price was great and I would probably buy another like this and would definitely recommend it to friends and family.