The Beautyrest Raffles Medium features a two storey pocket spring design for better support, conformity and durability. This spring system will give you zoned back support to encourage correct sleeping posture and minimal partner disturbance. Your sleep comfort will be enhanced by the additional comfort layers of superior latex, and alpaca for breath-ability to maintain an even temperature all night long. Also included is the latest in sleep comfort-Diamond Infused AirCool Memory Foam™. This layer helps to move heat away from your body assisting in a cool luxurious sleep. A Beautyrest Royale mattress combines luxury with superior back support for an exceptional sleep.