D'Addario’s Humidipak is the only maintenance-free, two-way humidity control system for guitar. It keeps your case at the ideal 45–50% humidity—no refills, no guesswork, and no mess. No need to worry about changes in weather, seasons, or location. Just place it in your case and let it do the work. Note: Humidipak is made for maintaining proper humidity. If your guitar is very dry or hasn’t been humidified before, use Humidipak Restore first to safely bring it back to the right level. Using Maintain packets on a dry guitar will wear them out faster.

The only maintenance-free, two-way humidity control system for guitar.

Automatically maintains the optimal 45-50% relative humidity level within your instrument case by adding or depleting moisture as necessary.

Packets last between 2-6 months and should always be kept in a sealed case.

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.

What ingredients do Humidipaks contain?

Humidipaks contain water, salt, and glycerine and while are considered to be made of non-toxic ingredients, they are not intended to be ingested. If ingested by a pet please consult your vet.

Free 3-Year Warranty

In addition to the standard included manufacturer warranty, virtually all new products carry our exclusive, industry-leading, absolutely free Sound Pure 3-Year Warranty, which includes parts and labor. It's our way of adding real value to the personal touch our small, dedicated team brings to every purchase.

Coverage exclusions live in Terms & Conditions, Section 27. Read the warranty →