D'Addario Humidipak Auto Humidity Control System

FEATURES:

True two-way humidity control
Maintains constant 45% RH within instrument case
No water, no drips, no mess
Long lasting, maintenance-free design
Includes 1 headstock pouch, 1 Soundhole pouch, 3 Humidipak packets
Comes with 3 packets and a soft mesh pouch that will not harm your instrument's finish
Packet last between 2-6 months and should always be kept in a sealed case
Replace firm packets with the Humidipak Replacement Pack (PW-HPRP-03)

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