The Kool Response 2500 mattress combines high density visco elastic with a patented gel bead temperature control technology to ensure a comfortable nights sleep. The Kool Response micro beads disperse body heat away from the surface and the visco elastic provides supportive and pressure relieving properties resulting in a material that is 12 times cooler and twice as supportive than the standard memory foam. Equivalent to 2500 pocket spring in a King Size Mattress