The FlexiFit 406 Petite nasal mask offers an over-the-nose mask solution specifically designed to fit finer featured faces. The Petite design is small, light and easy to use. The Stretchgear Headgear provides even greater comfort and a maintenance free bias diffuser ensures quieter operation. The FlexiFit 406 Petite Nasal Mask comes as an Out-of-Box solution fully assembled and ready for use.