F&P Brevida Nasal Pillow CPAP/BiPAP Mask with Headgear I have been using this headgear for three years now and find it very comfortable and unobtrusive.
SleepWeaver Advance Cloth Nasal CPAP/BiPAP Mask with Headgear (Featherweight Tube Free) It is very lightweight, however you still have to move it around to fit your nose area.