Comfort rating firm hand tufted mattress with knitted fabric mattress depth approx 28cm zero deflection spring system for our firmest beds ever sealy smart fibres provide a cool fresh dry and hypoallergenic sleeping environment eco friendly tencel fibres help keep you cool and dry sealy edge guard provides edge to edge support for greater durability and comfort layer of memory foam to aid spinal alignment endorsed by allergy uk for the reduction of house dust mites correctly supports