Latex is complicated stuff - it comes made by two processes, talalay and dunlop, and in different softnesses. The problem with this topper, is that you have no clue what it is. Talalay is usually considered the better grade, and feels softer than dunlop of the same rating. And someone who is happy with a 19 ILD softeness may be miserable with a 25 ILD. So it is important to know just what you are buying, and almost impossible to find out from OS. When I called OS, they swore this topper was 19 ILD talalay, which would have been great. But a number of posts on the net from people who have bought them say they got Latex Green dunlop drop shipped from Jeffco Fibers. One customer rep told me if I specified talalay that's what I would get, but another told me it would depend on whether they had any in stock. Oh well, OS is great about returns and will pay the return shipping if their description has been in error.