ResMed AirFit F30i Large Frame System WITHOUT HeadgearFeatures Top of head connection keeps air tubing out of the way for more freedom. UltraCompact cushion rests under the nose to help prevent irritation, red marks and soreness. With a cushion that avoids the top of your nose, you can wake up looking and feeling better. Quick release elbow allows you to get up at night and disconnect without having to remove the mask.