Most of the time, you do not get any kind of topper on your mattress, you just get the mattress. However, a lot of companies are starting to add wool toppers to their mattresses. Of course, the only problem with that is, people do not understand why. It has to do with the fact that wool can actually take moisture away, thus, keeping your body cooler and not letting sweat build up in your mattress. You can normally take these wool toppers off to be washed, thus, allowing you to keep your memory foam mattress or any kind of mattress clean for years to come. Some people think that they add the wool toppers to the beds just to make them look pretty and for a bit extra softness. However, that is not the case. Sure it does make the top of the mattress a bit softer, but that is not the main reason why they choose to use wool.