D'Addario Humidipak is the only maintenance-free, two-way humidity control system for guitar. It automatically depletes moisture to maintain the optimal 45%-50% relative humidity level within your instrument case, helping to protect your guitar from issues associated with humidity. 

Humidipak 'Maintain' packets will last for 3 months and can be easily replaced. Packets must be replaced after 3 months as they will collect moisture and once expired will no longer protect your instrument (and can harm your instrument if left to gather excess moisture)  

Note: Humidipak is not intended for dehumidification in high humidity environments. If Your instrument has not been previously humidified or is in a known dry condition, it is recommended to use Humidipak Restore to safely reestablish the proper humidity level to your instrument and it’s case before using the Humidipak Maintain System. Using Maintain packets on a dry instrument / case will greatly shorten the lifespan of the packets. Humidipak Maintain will remove moisture from the air and reduce relative humidity inside your case so must not to be used in overly dry environments as this may damage your guitar.

Key Features:

• 3x Maintain Packets
• Two-Way Humidity Control: It's a maintenance-free, two-way humidity control system designed for guitars. It automatically depletes or adds moisture to maintain the optimal 45%-50% relative humidity level within your instrument case.
• Guitar Protection: Helps protect your guitar from issues associated with humidity, such as warping, cracking, or other damage caused by excessively high or low humidity levels.
• 'Maintain' Packets: The 'Maintain' packets are designed to last for 3 months, providing continuous humidity control for your instrument.
• Easy Replacement: The packets can be easily replaced when they expire. It's important to replace them after 3 months, as they collect moisture and will no longer protect your instrument. Expired packets can even harm your instrument if they are left to gather excess moisture.