New in Sealed Packaging. The ResMed Swift FX nasal pillows in size Medium create a secure fit with reduced air leaks. Swift FX pillows provide a soft fit will a minimalist design providing for comfortable sleep apnea treatment making it feel like you are wearing no mask at all. The dual walled pillows provide minimal face contact and the soft material adjusts to your face without leaving marks from use. Even users prescribed high-pressure settings will find that Swift FX nasal pillows can handle the pressure for a comfortable night's rest. For the proper fit, the nasal pillow should rest comfortably on the nostrils, without causing extra pressure. Headgear and tubing are sold separately. Features & Benefits Soft and comfortable Minimal facial contact Ultra-quiet Latex-free