D'Addario Humidipak System Replacement Packets, 3-pack

3-pack of replacement packets for the Planet Waves Humidipak Humidity Control System, the first maintenance free, two-way humidity control system that preserves a constant 45%-50% relative humidity level within your instrument's case.

• 3 replacement packs for the D'Addario Humidipak system
• Automatic humidity control protects your instrument against warping, cracks and other damage cause by lack of humidification
• No more manual adjustments based on seasonal changes, geographic locations, temperature, or other factors Unlike refillable humidifiers
• Eliminates the guesswork and anxiety of maintaining your instrument’s proper humidity level.