STARTIST Guitar Humidifier Packs, Guitar Humidifier System, Maintain Replacement Packets, Two Way Humidity Control System for Guitars A

[PROTECT YOUR GUITAR]: Protects your instrument against warping, cracks and other damage cause by lack of humidification. [AUTOMATIC ADJUSTMENTS]: No more manual adjustments based on seasonal changes, geographic locations, temperature, or other factors refillable humidifiers. [AUTOMATIC HUMIDIFIER]: It automatically maintains the optimal 45%~50% relative humidity level within your instrument case, eliminating the guesswork and potential mess related to refilling a humidifier. [TWO WAY HUMIDITY CONTROL]: The first two way humidity control that maintains a constant 45%~50% relative humidity level within your instruments case [HUMIDIFICATION SYSTEM]: It is the only maintenance , two way humidity control system for guitar. Includes pouches and guitar humidifier packs. Specification:Material: non woven fabricSize Chart: A: 12cmx9.5cm/4.72inchx3.74inch B: 12cmx7.5cm/4.72inchx2.95inchPackage Includes:Optional Package3 Guitar Humidifier Packs1 Cloth Bagor 3 Guitar Humidifier PacksNote:Please allow slightly errors due to manual measurement and different monitors.