A proof/sample of an item with your imprint on it that is run on your request before the final order is sent to the factory. It is mainly used on large-scale orders for quality assurance. This is a very costly process and can add up to 5-10 days to your delivery time.

a production sample

A test print. An actual print of the copy and design printed on the item to measure the quality and reproduction ability. This is done after an order is placed but before it is produced.