With the InfinitySeal cushion, you can feel confident in getting a perfect fit to your face shape. In fact, 99.4% of users have achieved the right fit for comfortable CPAP therapy with the ResMed AirFit N20. The lightweight, soft headgear adds to sleeping comfort and the quick release elbow lets you get up at night with ease. Active sleepers love the flexible tubing which moves as they move throughout the night, so they never lose their connection.