thermosmart heated tubing for f p sleepstyle series cpap machines headgear These masks may continue to Size:Starter Pack Standard Frame + (S M L) These masks may continue to be used according to the instructions and updated labeling if patients or persons near the patients do not have implantable metal medical devices or metal objects in the body The mask works well for side sleepers and anyone who values comfort combined with reliable therapy It includes an internal heated coil to help prevent "rainout" and improve humidification levels during CPAP therapy This ThermoSmart Heated Tubing is made exclusively for use with F&P SleepStyle Series Auto CPAP Machines