Boveda Humidifier MB72-60-20P Two-Way Humidity Control, 20-pack of 60g to maintain 72% RH

Boveda MB72-60-20P is a large pack of Boveda 72% two-way humidity control pouches (60-gram size), supplied as 20 pieces in a resealable bag.

Boveda MB72-60-20P is a professional two-way humidity control solution designed to keep a stable 72% relative humidity (RH) inside wooden musical instrument cases (especially guitar cases). Each 60g pouch automatically releases or absorbs moisture as needed, helping protect tonewoods from drying out or swelling during storage and transport.

Key features and use:

• Purpose: Ideal for maintaining stable humidity in wooden instrument cases (e.g. guitars).
• How it works: Patented technology based on reverse osmosis. The pouch either releases or absorbs moisture as required and only emits pure water vapour. It can be in direct contact with wood.
• Lifespan: Typically 2 to 4 months depending on how well sealed the environment is. Replace when the pouch becomes completely hard (the crystals inside solidify).

Who it’s for: Guitarists, bassists and other musicians storing instruments in wooden cases who want reliable, maintenance-free humidity control for rehearsals, touring, studio work and long-term storage.

Best suited to: Any playing style or genre—especially for players who travel between different climates or keep valuable acoustic instruments where consistent humidity helps preserve playability and tone.