We use advanced "Activated Carbon Fiber" fabric in all of our cases and bags.
In our Silverton hard shell cases, it is built into the dividers.
In our other bags, it is used in the bag liner, often covered with a perforated rip-stop fabric.
Activated carbon is formed by converting a carbon-rich organic material (like wood, coal, bamboo, etc.) into charcoal by heating it to a very high temperature (600 to 1200 deg. C) with an oxidizing agent. When this activation process is conducted on carbon-fibers it creates a highly exposed surface area due to the extremely small pore sizes that are formed in the carbon.
The process creates countless microscopic tunnels in the fiber that allows particles (often impurities like odor-producing compounds) to bind to the carbon through the function called van der Waals Force.