Compact sound hole humidifier for guitars and ukuleles Keep instrument humidity stable to protect tone, finish, and structural integrity. This simple, passive humidifier sits inside the sound hole and starts working immediately to help maintain appropriate moisture levels for acoustic guitars, ukuleles, and other hollowbody string instruments. Key benefits Consistent humidity maintenance: helps reduce cracking, warping, and finish damage by moderating moisture levels inside the instrument body. Preserves sound and appearance: supports stable playing characteristics and helps protect the instrument surface and glue joints. Easy to use: place the unit in the sound hole and it begins providing humidification without batteries or setup. Multifunctional care tool: also works as a protective insert for the sound hole during storage or transport. Features and important attributes Function: passive sound hole humidifier designed to regulate internal humidity for better instrument stability and consistent performance. Compatibility: suitable for most acoustic guitars and ukuleles, and other hollowbody instruments with a standard sound hole opening. Size and design: compact, lowprofile shape fits inside the sound hole without obstructing the bridge or strings. Material and durability: constructed from durable materials for longterm use; designed for repeated placement and removal. Performance: provides ongoing humidity moderation when used as part of regular instrument care and storage routines. How to use Place the humidifier in the instrument sound hole so it rests securely without touching internal braces. Check and follow any filling or maintenance instructions provided with the product to ensure continued function. Use regularly during dry seasons, when storing instruments, and whenever instruments are transported or left in climatecontrolled environments. Practical applications Winter storage: keep a guitar in a heated, dry home without excessive drying of the wood by maintaining internal humidity. Travel and transport: place the humidifier in the instrument prior to packing in a case to reduce moisture swings during transit. Daily maintenance: use between playing sessions to help preserve tone and prevent gradual changes in setup caused by humidity fluctuations. This humidifier is a straightforward accessory for routine instrument care, offering passive humidity control, simple operation, and broad compatibility with acoustic string instruments.