Plank Firm Luxe Mattress

American Chiropractic Association Approved  Endorsed by the American Chiropractic Association (ACA). A three month study found that this luxe design reduces spinal stress, improves lumbar support, and alleviates back pain Firmest Hybrid Mattress on the Market  Never feel your back dip and never opt for the floor again. The extra firm support (a ten on the firmness scale) will keep you firmly supported all night long Choice of Firmer or Firmest   Change it up—will it be firmer or firmest? The choice is yours with a simple flip of the mattress. (This flippable design improves the longevity of your mattress.)  Time-honored Sleep Design  Our firm design is borrowed from the wisdom of the ancients who created Tatami mats—while offering the modern look and comfort of a traditional mattress