Unlike traditional mattresses, the Sensorzone support system within the Sanctuary range integrates Dreamfoam® and springs together into one unified system. The foam supports the springs and the springs support you. The load is spread evenly reducing pressure points on your hips and shoulders. This improves blood circulation and spinal alignment, reducing the likelihood of tossing and turning, and aches and pains. The bed sculpts to your body, absorbing pressure – allowing you to enjoy a longer and more restful sleep.