Boveda 84% 60g Humidity Control Pack for Humidors, Cigars, Musical Instruments, and Food - Set of 10 The Boveda Humidity Pack (60g) (set humidity 84%) is a saturated solution made of pure water and natural salt. As drying progresses, it releases only pure water vapor through the reverse osmosis membrane inside the bag. Furthermore, if the humidity exceeds the humidity indicated on the bag, it absorbs moisture from the air, making it an excellent humidity control agent that repeatedly absorbs and releases moisture within a small margin of error. (Unless intentionally broken, the solution inside will not leak out.) It is a popular product in Europe and America and is also used for storing pharmaceuticals. To use, simply remove it from the bag and place it in the desired location. This is a humidity control product that allows you to mature tobacco and shag without the need for troublesome tasks such as water replenishment. It is also recommended for use with tobacco, wood products, guitars, musical instrument reeds, and food storage. This product is manufactured on the premise that it will be used for food such as cereals, so it can be in direct contact with cigars without any problems. It is covered with brown paper on a special film that only allows air to pass through, but if you tear the brown paper, the contents will leak out. Please be careful. As a guideline for replacement, it is time to replace it with a new product when it becomes hard, like a "used disposable hand warmer." One bag is a guideline for approximately 130g of dried goods. *The usage period is approximately 2-3 months, but it varies depending on the usage environment, so please install a hygrometer and check accordingly. ------------------- Please consider this product with the understanding of home storage. Also, please refrain from purchasing if you are overly concerned about details.