D'Addario Guitar Humidifier Pro Acoustic Soundhole with Sponge Non Drip Suspends from Strings Holds 12x Weight in Water

UNIQUE HUMIDIFICATION SYSTEM: Guitar Humidifier Pro features a two-way humidity control that maintains 45-50 Percent relative humidity, the ideal range for your instrument EASY TO USE: Simply moisten the sponge, place it in the included hygrometer, and then install it in the soundhole of your guitar. Easy to monitor and refill sponge PROTECT YOUR GUITAR: Dry air can cause wood to crack and warp. Protect your guitar from expensive repairs and preserve its tone and playability with the Guitar Humidifier Pro LONG-LASTING AND REUSABLE: The humidifier sponge is long-lasting and can be easily refilled with distilled water as needed, making it a cost-effective and environmentally friendly solution TRUSTED BY MUSICIANS: D'Addario is a trusted brand among musicians, known for providing high-quality accessories that protect and enhance the performance of your instrument