Mattress: Get a natural feel pocket sprung mattress! Layered: With natural layers of wool and cotton fibres, plus memory foam for softness. Sprung: Features a quality Bonnell spring unit for great pressure relief and support. Firmness: A medium/firm mattress – perfect for those who like to sleep on their back! Cover: Features a super-soft and breathable cover. Sizes: Choose from single, double or king-size (see pricing below).