The Nolah Evolution is a premium luxury hybrid with customizable firmness. The high thermal conductivity Euro topper and organic covered topper draw heat away from the body. Microscopic air bubbles in AirFoamICE™ provide full-body pressure relief. The top comfort layers cushion the spine while the coil system adds heavy-duty support, structure and stability. The 15″ mattress, with seven layers, and the 13.75 gauge perimeter coils for edge support provide the durability you’re looking for in a mattress.