With the Humi-Care Crystal Gel Humidification Jar you just have to add a small amount of water and watch how the crystals absorb it and expand. These crystals contain a humidity-balancing solution of propylene glycol to insure a steady release of moisture and constant humidity of 65-70%. You'll just have to refill with water every 1-2 months, and each jar can be refilled over and over for up to a year before replacing. Ideal for 25-150 capacity humidors. Each Humi-Care Crystal Gel Humidification Jar contains 4 ounces.

Package Qty: Each
Size: 4 oz. Jar
Ships From: Bethlehem, PA   [?]
Available in the USA Only.