Preserving the correct humidity range with minimal effort is a snap! This two oz. jar is packed with distinctive pre-billed water absorbing gel crystals. These jars can be employed In combination with your humidor's current humidifiers or by themselves. To implement, basically twist off the cap & put the jar as part of your humidor. https://medium.com/@refinedtraditions/the-ultimate-buyers-guide-to-humidor-cabinets-09e99f97a801