Large clay-filled plastic container (1 ⅝" high x 2" diameter) helps prevent drying out and cracking of guitars, violins, cellos, and other wooden instruments. The Herco Guardfather is a simple-to-use humidifier system for use in instrument cases to keep a constant level of humidity preventing cracks and other issues related to dried out wood.

To use, simply open and immerse in water for 5 minutes. Close, wipe off excess water, and store in case. Repeat twice monthly to keep perfect humidity for your equipment.