Boveda 49% RH Standard 12-Pack Cube

The most convenient way to keep humidity pack replacements in reserve. Prevents too much or too little moisture from damaging an instrument. Protecting an instrument, Boveda lasts for months. Overwrapped, the packs are good for up to two years! Using Boveda in an instrument case: Requires zero maintenance—no more filling messy hoses and snakes and wetting sponges Maintains an ideal relative humidity range for instruments—45-55% RH Prevents wide fluctuations in humidity that cause the wood to expand or shrink, and degrade its performance abilities A 12-pack refills: Directional Starter Kit Small Starter Kit Large Starter Kit Single Fabric Holder Double Fabric Holder