Boveda Humidity Control Pack 49% RH Size 70

This is the right size Boveda for an instrument case. Keep your instrument safe and the hair on your bow under control with Boveda! 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 Prevents humidity fluctuates to limit bow hair movement *Size 70 packs are individually wrapped. If you select 'unwrapped,' your humidity pack will be activated at time of shipment*