The ThermoSmart Hose for the SleepStyle Auto is a heated tube designed to stop condensation from forming in the hose by keeping the air temperature warm as it passes from the machine to the mask. It features an insulating coil as well as heating coils, designed to maximize comfort so you truly get the full benefit of humidified air. The Fisher & Paykel patented AirSpiral technology is intended to minimize condensation, while the ThermoSmart technology keeps the temperatures in the hose balanced for optimal temperature and comfort. The tubing is lightweight and flexible and is able to adapt to any number of sleeping positions while keeping you dry.