The Boveda Humidity control pack controls the moisture levels in a container to protect its content from spoilage. If the moisture levels are either too high or too low, the product will go bad, but the humidity pack keeps it at a standard level. The package is able to identify spikes or drops in humidity levels and adjust accordingly. Packages that cannot be stored in a cool, dry place with perfect moisture levels can be supplemented with these packs to guarantee preservation. Key Features: Preservation: Prevents the moisture levels from rising too high or dropping too low Size and Quantity:8 Grams - 50 units in a pack Product Type: 62% two way humidity pack