Thank you for viewing. I am selling a mask used for the treatment of sleep apnea. It is a ResMed AirFit F20 full face mask, size M. This type covers not only the nose but also the mouth, making it ideal for those who tend to open their mouths during sleep. The cheek area has a magnetic design for easy removal and attachment. Please consider it. Shipping will be via either Rakuraku Mercari Bin or Yu-Yu Mercari Bin, depending on the product size. Please note that the method used may differ from the listing. Some parts may be disassembled to fit within the packaging materials. #CPAP #SleepApneaSyndrome #CPAP #RESMED #ResMed