Humydrole tobacco humidifier

I'm not 100% sure, but I think there is foam or spongy material in it that absorbs water. Then it is put in a humidor to keep cigars, or I guess tobacco, moist as the water evaporates maintaining a higher level of humidity in the humidor. There is almost a science to keeping cigars fresh. I don't smoke cigars, but I made someone a humidor in my workshop. Did a lot of reading about them. Spanish cedar lining in the box to keep bugs out. Some humidors even come with a thing to measure the humidity in the box. Cigar smokers can be just as crazy as metal detectors. Lol

Nice find.