The sealy casoli medium feel super king size mattress has a 1200 7 zone pocket spring system which together with a deep layer of innergetic latex provides outstanding comfort and pressure relief and correctly supports and aligns the spine in its natural shape helping to reduce aches and pains sealy smart fibres provide a cool fresh dry and hypoallergenic sleeping environment eco friendly tencel fibres help keep you cool and dry it is further endorsed by allergy uk for the reduction of ho