Whether you live in a hot, dry desert area or in the freezing arctic zone, the scientifically tested DAMPITS humidifier will protect your instrument against damage. This DAMPIT is for the Violin family of instruments. Superior soft rubber sleeve encloses a special open cell sponge. Instructions and handy humidity gauge included. The Dampit humidifier provides long term humidity protection, guarding against cracking and warping. Helps maintain tuning and beautiful tone quality. • MFSKU DPV • UPC 642491000024