With the Eson mask, exhaled air exits through the elbow at the front and often blows towards the person sleeping next to you. Eson diffuser filters are placed over this outlet and spread the breath over a larger surface area, for a less direct flow and a quieter exhalation.

• The filter slides onto the front elbow of the mask, tool-free and without altering the fit
• The included retaining door keeps the filter securely in place overnight
• Replace the filter when it becomes dirty or less effective, to restore the same comfort