Tranquil firm mattress encompasses a tightly stretched top design that gives a firm feel, to support joints, and provide postural comfort while you sleep. The pocket springs have been individually fortified to provide an ultra high-density spring system that offers additional rigidity, ensuring firm support and minimal partner disturbance, to keep you sleeping soundly all night long. Create a foundation for a comfortable sleep with a sturdy base made from solid New Zealand pine wood comes along with glides for simple positioning.