The sealy emperor zoned cushion top mattress is a comfortable and supportive mattress which features sealyrsquos patented posturetech 620 spring system providing a softer feel that gradually gets firmer as pressure increasesthe mattress has more springs at the border of the mattress which provides firmer edge support meaning no roll off this mattress also features sealy smart fibres with tencel a soft fabric that is eco friendly which helps keep you cool and dry sealy smart fibres are en