ResMed AirMini F20 HumidX is a waterless humidification cartridge designed for use with the AirMini™ travel CPAP and AirFit F20 / AirTouch F20 full face masks. It uses heat and moisture exchange (HME) technology to capture moisture from exhaled breath and return it on inhalation, improving comfort without the need for water.
 
Compact and disposable, it is ideal for travel and everyday use, with each cartridge lasting up to 30 days for a single user.