"Boveda’s patented 2 way humidity control continually responds to ambient conditions by adding or removing moisture to affect the enclosed environment and deliver the pre-determined RH (relative humidity) level printed on the pack. Available in 1g, 4g and 67g. Boveda is ideal for storing and curing (aging) cannabis that has already been dried. While Boveda is effective in moisture removal, the standard method of hanging in a dry environment is most effective. When you feel the plant is close to the intended moisture content for curing, Boveda will do the fine tuning for perfect long term storage. Grow it, dry it, package it with Boveda. You get perfect long term curing for the best possible cannabis."