Step up to a world class sleep experience with Beautyrest® World Class™. Our 1000-density Pocketed Coil® Technology and higher density foams provide premier individualized support + motion separation. Our brand new World Class Relief™ HD Foam, featured in all Level Four Mattresses, offers remarkable pressure relief that responds to your body. Plus, Level Four mattresses feature twice the SurfaceTouch™ Gel Memory Foam to unlock pressure relief right at the surface. InfiniCool® MAX Technology offers advanced cooling with vertical natural lux fibers in our Beautyrest® World Class™ Quilted mattresses. With 100 years of innovation behind us and many, many more ahead, our latest collection shows exactly how people at their best, get their Beautyrest®. - For the person who likes contouring comfort that responds to your movement with a soft-yet-supportive feel - Our 1000-density Pocketed Coil® Technology and higher density foams provide premier individualized support + motion separation - Our brand new World Class Relief™ HD Foam offers remarkable pressure relief that responds to your body - InfiniCool® MAX Technology offers advanced cooling with vertical natural lux fibers - Level Four mattresses feature twice the SurfaceTouch™ Gel Memory Foam to unlock pressure relief right at the surface Includes mattress only. Mattress plus box spring option also available. This mattress meets the requirements of 16CFR Part 1632 (federal flammability (open flame) standard for mattresses and mattress pads