Boveda BVGH2-1P Double Packet Holder

Double Holders (for acoustic guitars; large stringed, fretted and wood woodwind instruments; and large cases), which can each hold up to 4 49% RH Boveda Size 70.

The special leak-resistant lining of the Boveda Fabric Holder lets Boveda’s pure water vapor achieve and maintain a constant relative humidity (RH) range of 45% to 55%—the safe zone for wood instruments. Simply Place the Boveda Size 70 into the holder and place it in your instrument case, it's that easy.

Use with all Boveda, including High-Absorbency Boveda for wooden instruments in high-humidity climates (replacement Boveda available separately).

Always insert Boveda into a sleeve of a Boveda fabric holder before placing Boveda into an instrument case.

Leak-resistant holder lets pure water vapor in and out while providing an extra measure of protection from a sharp string or unfortunate impact. 

Soft, like a polishing cloth, so the polyester exterior is safe to store with an instrument.