Experience the pinnacle of support and restorative sleep with the Sleepsoul Space Orthopaedic 4000 Pocket Mattress. This premium mattress is expertly engineered for those who require a firmer, more supportive sleeping surface without compromising on luxury. At its core, a sophisticated 4000 pocket spring system provides unparalleled spinal alignment. This dual layer configuration consists of 1000 individual pocket springs and 3000 responsive mini springs that work independently to contour to your body shape while providing the firm foundation necessary for orthopaedic support.