Intermodal containers are large, standardized boxes used for transporting goods across different modes of transportation, such as ships, trains, and trucks. These containers are designed to be easily transferred between vehicles without unloading the cargo, making shipping more efficient and cost-effective. Typically made of steel, intermodal containers come in various sizes, with the most common being 20 and 40 feet long. They are equipped with locking mechanisms to secure the contents and are often used in global trade, facilitating the movement of products from manufacturers to consumers around the world.