ResMed AirFit F40 Full Face Mask Large Headgear - Size MediumWith an UltraCompact design, the ResMed AirFit F40 is ResMeds smallest tube down full face mask. The new AdaptiSeal silicone cushion adapts to the face, helping to maintain seal and comfort even when changing positions during sleep. The fully flexible frame with fewer adjustment points make it comfortable and easy to use. Patients can wear glasses to read and watch TV in bed while using therapy. The short tube helps to reduce drag and moves with them