2 Way humidity control for your instrument case. Maintain a constant 49% humiidity
Boveda patented 2-way humidity control makes it easy for you to protect your wood instruments with precision. Wood instruments should be kept between 45% and 55% relative humidity. Boveda eliminates major fluctuations in temperature and relative humidity inside the instrument case. Boveda 49% RH stabilizes the environment to prevent damage that happens to wood from exposure to fluctuations.
4 pack includes 4 x 49% humidity Boveda packets in resealable pouch