In Stock. 45 Day Lowest Price - 100% Satisfaction Guarantee. The Original Dampit Humidifier. Superior soft rubber sleeve encloses a special open cell sponge. Simply soak in water, wipe off, and insert through F-hole. Instructions and handy humidity gauge included. The Dampit humidifier provides long term humidity protection. It guards against cracking and warping.Available for violin, viola cello or bass.