Preserving the right humidity vary with little effort is really a snap! This 2 oz. jar is full of unique pre-charged drinking water absorbing gel crystals. These jars can be employed Along with your humidor's existing humidifiers or by them selves. To employ, only twist off the cap & area the jar within your humidor. https://medium.com/@refinedtraditions/the-ultimate-buyers-guide-to-humidor-cabinets-09e99f97a801