The Oliver smith pocket Spring cool memory foam mattress is a premier luxury mattress. It ranks up against the best mattress that department stores or carries. We owe this to comforts 600 tempered steel independently-encased coils which creates an equal weight distribution to help relieve any pressure points along your neck shoulders back and hips. Another advantage to the independently-encased coil structure is it reduces motion disturbance and extends the life of the springs. Don’t let the price fool you. This is the best mattress in the market for its price.