Features:
Boveda technology is unlike all other 1-way humidifiers, it's the only true 2-way humidity control that will add or remove moisture as needed to maintain between 45-55% relative humidity in your guitar case.
Protects your wooden instrument against warping, cracks and other damage caused by lack of humidification or too much humidification.
Typically lasts between 2-5 months in a seasoned case. Longevity depends on time of year, case quality and ambient RH levels.
 
Stock photo of product.
 
UPC: 850661003328