The frame helps accommodate those that sleep in nearly all positions achieve and maintain proper seal and airflow to the cushion. The cushion does not cover the nose, helping alleviate sores and irritation on the bridge of the nose. The DreamWear frame is made up of silicone tubing which allows airflow to pass through to the nasal cushion. If one side of the mask frame is closed off by being laid on, the airflow will be directed entirely through the other side to prevent any loss in airflow. Also included are wraps which can be placed on the frame to further help avoid irritation.The frame and cushion sizes are interchangeable so that any size frame can be used with any size cushion.