CVault Storage Containers Set 17-Liter, 8-Liter, 4-Liter Includes Six 60g Boveda Humidipaks Thick silicone ring ensures an airtight seal Includes Six Individually wrapped 60 Gram Humidipaks , Ready for use No Hassle, maintenance free storage system Pak holder, specially designed to hold your Boveda/humidipak The CVault is constructed of 18/10 food grade stainless steel; it is an airtight container that is impenetrable by light.