Wake up refreshed and supported every morning with a double gel enhanced Bonnell spring mattress for back pain that expertly blends orthopaedic support and cooling comfort. Enjoy the 12.5g open coil Bonnell spring system that encourages better spinal alignment and eases pressure on joints and muscles, while the integrated gel layer adapts to your body and helps maintain a cooler sleeping surface. Cushioned recycled polyester layers and a quilted panel fabric add a soft touch, making this cooling Bonnell spring mattress double size a sustainable and comfortable choice for restful nights.