The Martin acoustic guitar humidifier is unique in its tubular design.  Made from soft resin (hypo-allergenic and non-vinyl), this humidifier can absorb up to 10x its weight in water while minimising contact with any part of the guitar.

The Martin guitar humidifier tube is designed to be held between the strings and then extend into the guitar body where it can most efficiently balance the moisture, creating the perfect atmosphere for your guitar.