Zyppah vs VitalSleep
The Zyppah and VitalSleep are MADs (mandibular advancement devices). The Zyppah has an additional feature that really makes it more of a hybrid device. I found each device very comfortable to wear. However, the Zyppah has a slight edge over VitalSleep in terms of effectiveness and comfort. VitalSleep costs less, cleans easier and has a unique…