Planet Waves Humidipak Automatic Humidity Control System

Planet Waves, in collaboration with Humidipak, brings you the first two-way humidity control that maintains a constant 45% relative humidity level. The patented Planet Waves Humidipak completely eliminates all the guesswork and anxiety of maintaining your instrument's proper humidity level. No more guessing if or when to refill the humidifier and worrying about drips or mess. Unlike all refillable humidifiers, the Humidipak provides true "two-way" purified humidity control since it adds or depletes moisture only as needed to maintain 45% RH (relative humidity) - the ideal climate for wooden instruments.