The Rock Hard Mega Firm Mattress is our firmest mattress ever, perfect for those prioritizing support. It features a core of 1500 strong pocket springs that contour to your body, offering blissful pressure relief and strong orthopaedic support. This mattress has an extra-firm feel and includes a temperature-regulating insulator pad for optimal sleep comfort. Additional steel along the border ensures a fully supported mattress edge, and the tufted sleeping surface enhances stability and durability. Comes with a 5 Year Guarantee.