There are a few good reasons, but most important is to keep in mind that a mattress has firmness for a reason. Do yourself and your back a favor and don’t buy a topper with tons of plushness. A mattress topper can protect your mattress from stains, odors and all kinds of liquids. It’s washable and much easier to replace than a mattress. In addition it adds plushness and coziness. That being said studies have shown that too soft mattresses result in back pain. Our topper is perfectly balanced to add some coziness, but not diminishing the mattress quality to make your back suffer.