Pocket Sprung Hybrid Dual Comfort MattressIndividual nested pocket stainless springs each working independently to offer an all over support to your bodys needs, reducing the build up of pressure supporting you the sleepers, head, neck, shoulders, hips and legs. A deep layer of 500g Wool, enhancing the comfort keeping the sleeper warm in the winter and cool in the summer. The Wool retains moisture speeding the cooling process and simultaneously feeds back heat when the temperature has lowered