D'Addario Humidipak Two Way Humidification System Replacement Pack PW-HPRP-03

The Planet Waves Two-way Humidification Replacement Pak lets you maintain a constant 45% humidity level for your instrument. The Two-way Humidification Replacement Pak keeps a steady humidity level by adding or depleting moisture as necessary. Now you can keep your prized instrument stored without having to resort to messy, refillable units. Protect your investment with the Planet Waves Two-way Humidification Replacement Pack.

• True two-way humidity control
• Maintains constant 45%RH within instrument case
• No water, no drips, no mess
• Long lasting, maintenance free design