D'Addario Two-Way Humidification Refills, 3 Packets (PW-HPRP-03)

With D'Addario's two-way humidification refill pack you get three brand new packets specifically designed for the D'Addario Two-Way Humidification System, enough to refresh your entire Humidification set. The Two-Way Humidification System is a maintenance-free two-way humidity control system that is perfect for your electric, acoustic, or classical guitar.  (The Two-Way Humidification System was formerly known as the Planet Waves Humidipak.) Once activated (by opening the foil-sealed package), this unique two-way humidity control system completely eliminates the guesswork and anxiety from maintaining your instrument's proper humidity level.This package includes three replacement gel-packs, which are meant for use with the Two-Way Humidification System pouches (sold separately as a starter kit).When used as a set, the Two-Way Humidification System has the ability to provide 27 grams of water, that's enough moisture to completely restore an extremely dry guitar to 45% RH without the risk