Superior performance delivers maximum comfort. With lighter design and effective treatment, F1A will offer you and your family a good night sleep. [ Remarkable comfort ] Dual-wall cushion will significantly fit for your face with minimalpressure points. The slide-in design provides you withhigh level seal and effective treatment; [ User Friendly ] Thanks to its 5 parts compact design, you can reassemble it instantly.Less parts, more convenience; [ Visual Freedom ] With the unique design, your vision is totally released and you willhave the chance to enjoy the world as well as therapy.