German quality at its' best. If you are looking for a great long-term sleep investment, this is the duvet for you. With ClimaBalance, Sanders can present a patented and scientist proven duvet with a double-zone system consisting of quality filled cassettes and ventilating climate control zones. It regulates temperature and moisture according to the thermal and physiological needs of the sleeper. Thanks to the thermal effect, the physical effect of rising warm air and moisture, an individual, comfortable atmosphere - which adjusts itself constantly and automatically throughout the night - is created the moment you get into bed.