Constructed from food grade stainless steel. This 8 Litre Cvault humidity controlled storage container is an airtight container that is, securable, scent proof storage for your herbs, food, botanicals, medicines. Control the environment inside with a Boveda Humidity satchel. ¼ inch wide silicone seal to ensure an airtight seal. Humidity pack holder specifically designed to hold your Boveda®. Industrial Engineered Latch Design: Engineered to provide an airtight seal; locking in product freshness consistently. CVaults Are Stackable: Buy multiples of the Cvault and different varieties without storage issues as containers are stackable