The Hole Master protects your guitar from cracks and tone changes by sustaining optimum humidity with the switchable Humidifier and Dehumidifier, even in the most severe conditions.
If the humidity level gets below 45%, the instrument could develop cracks on the body. The humidifier kit releases moisture inside the guitar maintaining necessary humidity levels in dryer conditions.
If the humidity level gets above 55%, the original sound of the instrument can change. The dehumidifier kit works by blocking and absorbing unnecessary humidity inside your instrument, and maintaining the optimum level of humidity throughout it.
The dehumidifier is made with an instrument tageted silica gel that absorbs humidity effectively for up to 3-4 months.
For re-use, let it dry in natural sunlight.