I ordered a 3-inch, 4-pound memory foam topper. The one I received seems like it is 4 inches, 3 pound density. I would prefer the actual 3 inches, with more dense foam. The product did not smell, does not get too hot when sleeping on it, perhaps due to the holes in the foam, which seems like a good design feature. It is just higher loft and softer than I expected and wanted.