Essential to our mattresses, T&N Adaptive foam was created based on customer feedback to provide pressure relief where you need it most. The open-cell structure offers a flexible sleep surface that responds and adjusts with you. A lower body temperature will help you sleep better and longer. The Original sleeps cool thanks to cooling gel, heat-wicking graphite, and the breathable construction of our Adaptive foam. The Original is designed to be compatible with most frames, including: traditional frames, box springs, platform frames, slatted frames, bunkie boards, and adjustable frames. So no need to worry about any special requirements.