Boveda 2-Way Humidity Control 4-Pack Refill, 49%RH, 70g

The Boveda 2-Way Humidity Control 4-Pack Refill is the perfect way to keep your instruments in pristine condition. Maintaining relative humidity of 40%–50% prevents warping, shrinking, and cracking, preserving the look and tone of your instruments or reeds. The large kit is ideal for acoustic guitar, cello, double bass, bassoon, clarinet, etc. With a 2+ year shelf life in original packaging, the Boveda 2-Way Humidity Control 4-Pack Refill is necessary for any musician.FEATURES HOW IT WORKS: Humidity can cause damage to your instrument over time, and Boveda's packs compensate for the atmosphere inside your instrument or reed, releasing moisture when needed and absorbing it when there's too much PROTECT: This innovative product uses cutting-edge technology to regulate the humidity in your instrument, keeping it at a safe and consistent level to prevent warping and cracking – Boveda ensures that your instrument will retain its beautiful tone and timbre for years to come. DEPENDABLE: Prope