Holding Capacity of 2 Pounds (1 kg)This 21-liter commercial humidity controlled container comes with one (1) 320 g 62% Boveda humidity pack that attaches to the inside lid of the container, ensuring utmost freshness at all times.Small CVault Lid Design:┬╝ inch wide silicone seal to ensure an airtight seal.Top of lid can be written on with a NON-PERMANENT marker and relabeled as vault contents change.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.