This paper deals with reverse flows in logistics, their characteristics, and the way they are put together when designing return logistics networks depending on the nature of the return. Since reverse flows are in themselves very complex and therefore much riskier and more expensive than traditional ones, for implementation in classic distribution flows it is necessary to carry out a series of analyses so that the implementation will ultimately have a positive effect on the business, but also on the entire supply chain. From the aspect of sustainability, return logistics contributes to the circular economy, which is gradually being pursued by larger corporations and countries, which is particularly emphasized in the objectives of the European Union. Emphasis on the reuse of materials from used products is not only good for the environment and its future, but in the long term, with correctly implemented practices, it achieves great financial savings.