The Silentnight Miracoil Superior Memory mattress features Silentnight's unique zoned Miracoil spring system, helping to spread weight evenly across the bed, providing zoned support to relieve pressure where body weight is greatest and perfect spinal alignment. With a luxury body moulding memory foam layer that provides extra pressure relief and optimum comfort. The mattress is finished with a soft knitted mattress cover for a beautifully soft sleeping surface. Purotex anti-allergy treated mattress - a natural chemical free solution to help reduce dustmites. This mattress provides a medium firm support feel. Easycare mattress - no need to turn.