The Melody Pillowtop from Hypnos features the ReActive 8 pocket spring system, this helps to retain the height and longevity of the mattress and to give head-to-toe zonal support. Every spring has 8 active turns independently adapts to your shape and weight distribution to provide total spinal and body support. The mattress combines wool, cotton and latex fillings which provide excellent temperature regulation and a luxurious feel. This luxurious mattress also features 37.5 Degree technology in the cover helping you to remain cool and comfortable whilst you sleep