Freight containers are large, standardized boxes used for transporting goods across various modes of transport, including ships, trucks, and trains. They are designed to be easily loaded, unloaded, and transferred between different vehicles without unpacking the contents. This efficiency helps streamline global trade and logistics. Typically made of steel or aluminum, freight containers come in various sizes, with the most common being the 20-foot and 40-foot containers. They are built to withstand harsh weather conditions and are equipped with locking mechanisms to secure the cargo during transit. This standardization has revolutionized shipping and made it more cost-effective.