Unlike any others you can buy, HUMISTAT®-brand humidifiers are adjustable. They contain no sponges, hoses, or tubes. They are designed to preclude any leaks—especially important if it's a device meant to be placed inside your instrument.
Play a larger instrument? Then this is the humidifier for you. Like its smaller counterpart, it releases humidity–but not water–to provide long-lasting protection against the damaging effects of dry air.
The D'Addario Humidipak Restore Kit allow you to safely restore an instrument and case that is in a known dry condition or has previously not been humidified to the proper humidity level without the danger of over humidification