The Planet Waves PW-GVH large humidifier prevents body cracks and warped necks and is ideal for acoustic/classical guitar, cello, double bass, bass clarinet, & other medium-large instruments.

The humidifier has an open-cell phenolic foam insert rather than ordinary sponge. The foam shrinks less than 1% when dry, whereas sponge can deform dramatically, resulting in leakage.

A syringe is included, which allows you to control the amount of water used when filling or refilling the humidifier.

Maintaining the humidifier is as easy as squirting distilled water into the nozzle when the element begins to dry. The frequency of maintenance will depend on the specific atmospheric conditions.

The humidifier can be securely attached to your case with the attached hook and loop material.

Features

• Conveniently sized humidifier is ideal for fretted, bowed, and woodwind instruments
• Protects your instrument without contacting the instrument's finish
• Special design fits easily inside your case
• Hook & loop material with adhesive
• Syringe makes refills easy and accurate
• Approx. 12 x 7cm