The Grand-Riviere is among the new Posturepedic mattresses Sealy has introduced this year. This plush Euro pillowtop mattress has a CoreSupport Center with gel memory foam that conforms to unique body shapes and weights while helping promote a cool sleeping environment. The patented Apex innerspring is softer at the top for comfort and firmer underneath, providing extra support. Each coil is also individually encased to minimize motion transfer. Its SolidEdge HD system enhances side-to-side stability and increases usable sleeping space.