I was curious so I looked and found this:
Humydrole Clay Elements
Ultimate Cigar Protector humidification elements from Atmos Products use the company’s time-tested Humydrole clay-based technology. Originally developed in 1925 specifically for tobacco use, Humydrole features an improved formulation to automatically provide proper moisture for cigars and tobaccos. The Ultimate ($50 retail) can properly maintain humidity levels for 50–125 cigars; the Junior Ultimate ($40 retail) between 20–40 cigars; and Round ($10 retail) between 15–25 cigars. Humydrole consists of inert organic and inorganic compounds that are harmless to tobacco; the material will not drip once excess water has been drained off, and it appears dark brown in color when wet and light brown when dry, visually alerting users when additional water is needed.
Normal useful life is three to five years depending on usage. Also available is Enhancer Solution, specifically designed to enhance the performance of Humidroyle material.
Atmos Products Co., Inc., Harrison, N.J., Toll-free: (800) 836-0194, Tel: 973-483-0795, E-mail:
[email protected].