Boveda 2-Way Humidity Control Bag

Boveda is easy-to-use, maintenance-free humidity control for wood instruments—fretted, bowed and woodwinds. Keeps an instrument humidified and dehumidified—whatever its surroundings call for. This product is a replacement Boveda for use in Boveda fabric holders (included in the Boveda 2-Way Humidity Control System). Information Individual product dimensions: 5.25" x 3.5" RH specifications: 49% RH, Size 70 gram Stop adding water to foam, hoses and sponges in your instrument case. 1-way humidifiers require constant attention and could damage your instrument, affect the sound and playability and lead to costly repairs. Easy-to-use, maintenance-free humidity control for wood instruments—fretted, bowed and woodwinds. Just slip this replacement Boveda into Boveda fabric holders (included in the Boveda 2-Way Humidity Control System). Then nestle in and/or around the instrument. Close the case, then Boveda automatically adds and/or absorbs moisture all around a wood instrument. Achieves and ma