Changes in humidity can wreak havoc with even the most sturdily-built instrument, shortening its life and compromising sonic fidelity, particularly on the road. The GA250 Ukulele Humidifier is a cost-effective investment in your instrument´s looks, longevity and, of course, sound. The GA250 can be stored conveniently and unobtrusively by suspending it between your strings in the sound hole. The sponge-style humidifiers dispense moisture evenly without ever contacting the instrument itself, ensuring it looks and sounds as good as the day you bought it.