Simply, "reverse logistics" is all activity associated with a product/service after the point of sale, the ultimate goal to optimize or make more efficient aftermarket activity, thus saving money. Types of activity common with reverse logistics includes: logistics, warehousing, repair, refurbishment, recycling, e-waste, after market call center support, reverse fulfillment, field service and many others.
An example of Reverse Logistics: T-Shirts, which are often sold at second sales where those with minor flaws like improper logo print of the manufacturer or unnoticeable stitching flaws are exhibited to be sold at discounted prices. The collection of the flawed clothes from the various stores and reselling them at the Second Sales shop is an example of reverse logistics.