The D'Addario Humidipak is the only dual-action humidity control system for guitars. It automatically maintains the optimal relative humidity level of 45%-50% in the instrument's case, eliminating the guesswork and potential chaos associated with refilling a humidifier. No manual adjustments are required based on seasonal changes or other factors.

Important Information:

• Designed to restore and maintain the moisture of the instrument.
• Not intended for dehumidification in high humidity environments.
• It is recommended to use Humidipak Restore before utilizing the maintenance system if the instrument is dry.
• Using it in a dry instrument/case will reduce the lifespan of the packs.