The Integra Boost 8-gram 2-Way Humidity Control Packs at 62% RH (576-pack) provide an effective solution for maintaining optimal humidity levels in enclosed environments. Utilizing patented technology, these packs automatically release or absorb moisture to sustain a consistent 62% relative humidity, ideal for preserving herbs, spices, cigars, and other moisture-sensitive items.​Each ... https://www.hydroponicstown.com/integra-boost-8-gram-2-way-humidity-control-at-62-rh-576-pack