is any kind of box or room with constant humidity that is used to store cigars, cigarettes, or pipe tobacco. For private use, small wooden or acrylic glass humidor boxes for a few dozen cigars are used, while cigar shops may have walk-in humidors.
Humidors can be used to store other goods for which a certain level of humidity is desirable; the Colorado Rockies Major League Baseball team stores game balls in a large humidor at their home stadium, Coors Field, to counteract the effects of Denver's high altitude and generally low humidity. Humidors of all sizes use hygrometers to keep track of the humidity levels.
Classification of humidors
Walk-in humidor - most common in cigar bars or stores. One room is built as or converted to a humidor where all the cigars are stored.
Cabinet humidor - usually placed on the floor as a piece of furniture. Typically holds 1000-5000 cigars.
Table humidor - often quite heavy, though portable in theory, it's usually kept in one location. Capacity ranges from three hundred to a few thousand cigars. It usually comes with a polished wood exterior, marble, leather or combination of exotic elements, and glass top.
Personal humidor - semi-regular cigar smokers will sometimes keep a small humidor in their homes for personal storage, special events, or aesthetic characteristics of the humidor itself. Usually contains 20-75 cigars. This may also be known as a "Desktop Humidor".
Travel humidor - portable and made for carrying cigars enough for the outing or event, usually 2 to 10 cigars.