The Integra Boost 8-Gram 2-Way Humidity Control Pack (72% RH, 500/pack) is a premium solution for maintaining optimal moisture levels in mid-sized storage containers. Utilizing patented 2-way humidity control technology, these packs absorb or release moisture as needed to sustain a consistent 72% relative humidity (RH) environment.Ideal for curing, storing, and preserving herbs, spice... https://www.hydroponicstown.com/integra-boost-2-way-humidity-control-at-72-rh