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.
What is two-way humidity control?
Two-way humidity control works by continually responding to the outside temperature and climate by adding or removing humidity as needed to maintain a relative humidity inside the Reed Vitalizer bag.