The Zoma mattress is a 10-inch mattress that has three layers. The top layer is two inches of gel memory foam. This memory foam contours to your body and provides pressure relief. The middle layer is six inches of supportive base foam. This base foam gives the mattress its structure and support. The bottom layer is two inches of high-density foam. This bottom layer provides additional support for the mattress. The Zoma mattress has a medium firmness level, which means it will provide some give when you lie down on it but will also provide support where you need it most.