Planet Waves HPK01 Humidipak Humidifier

D'Addario Humidipak is the only maintenance-free, two-way humidity control system for guitar.

It automatically maintains the optimal 45%-50% relative humidity level within your instrument case, eliminating the guesswork and potential mess related to refilling a humidifier.

No more manual adjustments based on seasonal changes, geographic locations, temperature, or other factors.

Note: Humidipak is designed for restoring and maintaining instrument humidity.

This product is not intended for dehumidification in high humidity environments.