CPAP Full Face Mask AirFit F20 Medium M ResMed Sleep Apnea Syndrome My family member used it for only one night, but it didn't fit. I washed everything with a neutral detergent and stored it at home for several months. It's in undamaged condition, but the silicone part might be slightly discolored. I couldn't bring myself to throw it away. Please understand that this is not a new item, and purchase it with that in mind. Would you like to try it? I hope it can be of use to someone (^-^)