The sealy nostromo medium feel super king size mattress has a micro quilted luxury pillow top with 1400 individual posture pocket springs the soft knitted fabric incorporates both eco friendly tencel to keep you cool fresh and dry and sealy smart fibres for the elimination of house dust mites a deep layer of innergetic latex provides outstanding comfort and pressure relief while the zonal support system correctly supports and aligns the spine in its natural shape helping to reduce aches and