FITS N20 Cushion Replacement Part for the AirFit F20 Mask, Non OEM, Size Small.The FITS N20 replacement cushion offers exceptional quality at a lower cost, these cushions help maintain performance while reducing expenses.-ultra soft, flexible design for enhanced comfort-guaranteed to fit the AirFit N20 mask in S,M or L sizes.-features an innovative silcone cushion tested to perform up to the highest therapy pressures.-the forgiving cusion has been tested to prevent blowouts, accomodate patient movement and provide a robust seal across even the highest pressures.-easy to clean surface for hassle-free maintenance