The small CVault is 3.25″ X 1.75″ or 8 cm X 4.4 cm and it holds approximately a half ounce.
It depends on how many times you open it in a day. The packs that are used with this container allow for your stash to stay fresh for up to months. However every case is different. Usually if it starts to dry, you just replace the Boveda pack that we offer for sale here.
You should use both packs at the same time with the large. The reason is that the amount of mass inside the container is much more than the small and medium. You want to have the container as full as possible for optimal results.
You will need to dry your product before you put it into the CVault. We recommend drying longer and dryer than usual andorramed.com. a 12-15 day dry and dry until your moisture content is in the low 50%. then put into the CVaults for curing and storing.