How does the active seat ventilation system work in the Audi A6?

I've heard about the active seat ventilation system in the Audi A6, but I'm not sure how it actually works. Can you provide a brief explanation?

The active seat ventilation system in the Audi A6 uses small fans and air channels built into the seats to draw hot air away from the body, keeping you cool during hot weather.

The active seat ventilation system in the Audi A6 also helps to reduce moisture and humidity levels in the seat, making it more comfortable for longer drives.