About SleepWeaver Advance: The SleepWeaver Advance soft-cloth nasal PAP mask features our own Zzzephyr Seal, which conforms to your face and seals even more closely than our other designs. The redesigned Advance Headgear is also made of soft cloth that’s easy to fit for a comfortable night’s sleep. The 3-Point headgear design allows 4” of sizing on each side and on the top, so it can fit any size head. The soft but durable forehead and neck material pull heat and moisture away from the skin, making this headgear even better than ever.