“Humitron” Bass Humidifier. Helps to prevent wood cracking. Designed to replace moisture which is removed from the structure of an instrument by the action of both climate and air conditioning.
Humitrons are made of the most advanced material available.
The tubes were custom extruded of the finest non-vinyl and non-allergenic resin, soft enough not to exert pressure around the F-holes / sound-holes and sufficiently sturdy to minimize contact with the inside parts of an instrument.
The water-suction stems within the Humitrons absorb water ten times of their weight and then slowly release it through the holes.
For all size Bass
Superior soft rubber sleeve encloses a special open cell sponge.