HUMI-SMART 2-WAY HUMIDITY CONTROL provides a perfectly stable relative humidity (RH) for the storage of a variety of products. Our packs are designed for cigars, tobacco, herbal medicine, cannabis, food storage, spices & nuts, wood instruments, electronics, document and photo storage, and much more! No Preservatives, Plant Based Solution, 100% Biodegradable, Say goodbye to too wet and too dry. HUMI-SMART's 2-way humidity control technology responds to the environment you place it in-either releasing or absorbing moisture as needed to ensure the optimal environment for everything from your favorite pantry items to rare cigars. Whether you live on a humid coast or in a landlocked desert, HUMI-SMART 2-way humidity packs respond and adapt to the environment they're placed in, creating optimal moisture levels with minimal work.