Zerust® has proven to be the absolute best way to protect your tackle against rust and corrosion. Molded into many Flambeau products, this patented polymer emits a harmless vapor, forming a protective layer around metal surfaces. With the Zerust® VCI (Volatile Corrosion Inhibitor) molded directly into the plastic, there is no need for messy VCI cardboard chips that lose their potency when they get wet. All Zerust® products will maintain their effectiveness for five years of hassle free, long lasting protection. Besides being "Built To Fish. Built To Last" Flambeau® tackle storage products with Zerust® are made to make all the tackle you store in them last as well. Look for the Zerust® symbol next to those products that feature this revolutionary technology. This is just another innovation from Flambeau®... your most trusted source in tackle storage.