Xikar Crystal Cigar Humidifier Jars

XIKAR Crystal Humidifier Jars emit and absorb moisture in your humidor maintaining a consistent rate of 70% relative humidity. When the crystals shrink below the "Add Line" on the jar, simply refill with XIKAR propylene glycol solution (sold separately) for optimum humidity control. One 4 oz jar regulates humidity for up to 150 cigars. Easy to use; simply unscrew the top, fill with propylene glycol, and place in humidor. Mess-free design.