Changes in humidity can wreak havoc on a ukulele, compromising sonic fidelity, or causing damage to the joints, neck angle, and finish. Thankfully there is a simple remedy for this problem. Suspended conveniently and unobtrusively in a ukulele's soundhole, our GA250 Ukulele Humidifier gradually releases moisture to maintain a consistent humidity level that helps preserve the instrument's looks, longevity, and sound.