Comfort rating firm hand tufted mattress with knitted fabric mattress depth approx 29cm 2400 double decker spring unit sealy smart fibres provide a cool fresh dry and hypoallergenic sleeping environment eco friendly tencel fibres help keep you cool and dry patented unicase design protects the pocket springs and stop the mattress from sagging a deep layer of innergenic latex foroutstanding comfort and pressure relief endorsed by allergy uk for the reduction of house dust mites correctl