F&P Brevida Nasal Mask with Headgear, 2 Seals, 1 Extra Small-Small and 1 Medium-Large. Gaining patient confidence is key to successful CPAP therapy. And patient confidence begins with a mask that fits and is comfortable. Developed from extensive patient-centred research, F&P Brevida features simple, adjustable headgear and the innovative AirPillow seal for a gentle, effective seal.