CVault Storage Containers: The World’s Smartest Curing & Humidity-Controlled Cannabis Stash Container. No thinking required! CVaults are perfect for curing and storing flower, tobacco, spices and other dried goods. CVault storage containers are manufactured with 304 food-grade stainless steel & powered by Boveda’s two-way humidity control pack. The CVault enhances taste and aroma, and it maintains the integrity of its contents.