Instruments of International Traffic (IIT) is a US Shipment Type that allows for the release of shipments consisting of skids, containers and similar articles at the border.

To qualify as Instruments of International Traffic, the goods must be suitable for repeated use, must arrive containing merchandise or empty to be refilled and ready for export to another country. They must also be covered by a continuous bond filed by either the importer or the carrier on Customs Form 301.

Goods entering as Instruments of International Traffic are free of duty and tax.