The sealy posturepedic pearl memory mattress will provide luxurious comfort together with all the support you need for that perfect nights sleepthis mattress is built using sealys posture tech 620 responsive spring system ensuring that your weight is equally distributed so that the heavier parts of the body have the right support the spine is correctly aligned helping to reduce any aches and pains a layer of memory foam for enhanced comfort and pressure relief is positioned on top of the posture