Sunset Replacement CPAP Mask Cushion, for TAP PAP Nasal Pillow Mask, Medium Mouthpiece molds to the upper teeth to provide a custom and secure fit even if the bottom teeth are not in contact with the mouthpiece. Unique adjustment joint with nut and bolt connection allows the nasal pillows to be set to the desired angle. Provides a stable fit regardless of the sleep position. Ninety day compliance guarantee for new users of the mask, thirty day guarantee for experienced users.