Zerust®/Excor® VCI Weapon Bags provide protection against corrosion damage for weapons and accessories in shipping, storage and in-between operations. They have proven their performance and reliability in the field. The bags protect against dust, sand and humidity. VCI Weapon Bags provide corrosion protection for years for properly cleaned and stored weapons, parts and accessories during shipment, storage and in-between operations. Simply place clean and dry items into the bag and tightly close. The Zerust® Vapor Corrosion Inhibitors (VCIs) saturate their interior and stop rust from forming.