NOTICE: If the listing doesn't say Ships from and sold by Boveda Inc. you are not ordering the official Boveda multi-pack for the medium 8 gram size Boveda because we do not wholesale this item.;8 gram Boveda are for small containers and travel humidors, where our larger 60 gram pack will not fit. For desktop humidors and large containers you'll want to use the large 60 gram Boveda size.;The 8 gram Boveda are factory-sealed in a high-barrier resealable plastic bag. Keep the zipper closed and you can expect the Boveda to be fresh for up to 2 years before you're ready to put them to use.;Boveda monitors ambient humidity and adds or removes moisture to maintain the RH engineered into the pack to an accuracy of +/- 1% with zero activation or maintenance needed.;Available in a variety of RH levels, Boveda provides a perfectly stable environment for the storage of tobacco, wooden reeds, food and herbal medicine. It's time to replace the Boveda when there is very little softness left in the pack.