If you wish to return a delivery in full or in part to us, we recommend that, on the basis of appropriate insurance and research, you send a shipment, e.g. to arrange by DHL package. The costs for the return are borne by the customer. For a return within Germany you will find here the link to the DHL online franking package (up to 2kg) with research and liability up to 500 EUR:
Of course you can also use other transport companies!