D'Addario Two-Way Humidification System Packets (12-Pack)

The D'Addario Two‐Way Humidification System Packets are designed to keep an acoustic guitar stable, healthy and protected from humidity‐related damage throughout the year. These replacement packets work with the D'Addario Humidipak system to actively regulate moisture levels inside the instrument case.

Using two‐way humidity control technology, each packet automatically releases or absorbs moisture as needed to maintain an ideal relative humidity of 45% ‐ 50%. This balanced environment helps prevent common issues such as cracks, warping, swelling and shrinking caused by seasonal or climate changes.

The packets are simple to use and require no refilling or maintenance. They are positioned between the strings in the soundhole and beneath the headstock, ensuring even humidity control across the instrument. Suitable for acoustic guitars, this 12‐pack provides long‐term protection and convenience for players who want consistent care without guesswork.

A practical solution for safeguarding valuable instruments, these Humidipaks reflect the reliability and attention to detail associated with D'Addario.

Features

• Replacement packet pack for the D'Addario Humidipak humidity control system
• Two‐way humidity control technology absorbs or releases moisture as needed
• Maintains an ideal relative humidity of 45%‐50%
• Helps prevent cracking, warping, swelling and shrinking of acoustic guitars
• Designed for use in the soundhole and under the headstock
• No refilling, activation or maintenance required
• Suitable for acoustic guitars
• Includes 12 Humidipak replacement packets