ResMed Swift LT CPAP Mask Headgear #60578. Condition is New with box. Shipped with USPS First Class Package. Replacement headgear for the ResMed Swift LT Nasal Pillows CPAP Mask. Designed for use only with the ResMed Swift LT nasal interface system (this headgear does not work with the previous versions, the Mirage Swift and Mirage Swift II).