Humidipack Planet Waves

The Planet Waves Humidipack Humidity Control System is 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 - the ideal climate for wooden instruments.