This is replacement headgear for the Nuance Pro CPAP masks. Please note this is replacement headgear ONLY, NO mask frame included. Headgear for the Nuance Pro features a total of three velcro tabs that can be adjusted for a personalized fit. The three tabs come with an additional layer of stability and help protect your seal as you proceed with therapy. The Nuance CPAP mask headgear attachment is easy to attach and detach and can be cleaned in seconds.