ResMed Replacement Headgear for AirFit™ F20 and AirFit™ F20 For Her Full Face Mask.   The AirFit™ F20 Full Face Mask and the AirFit™ F20 For Her Full Face Mask headgear are well-padded, increasing overall comfort and stability. The minimalist design places the headgear exactly where it needs to be to provide perfect stability and maximum comfort. The crown-of-the-head strap is the perfect design upgrade to keep your mask where it needs to be, without sacrificing comfort.   The AirFit™ F20 Full Face Mask and the AirFit™ F20 For Her Full Face Mask headgear is a 4-point headgear. Paired with magnetic clips, the headgear has a traditional approach in 2-above and 2-below the ear connection points. It is worth noting that The AirFit™ F20 Full Face Mask is compatible with three headgear sizes: Small, Medium, and Large. The other available headgear in this series is the soft-toned, Violet headgear for the AirFit™ F20 For Her, which is available in only one size - Small.