Return procedure

Hi,

Here’s a copied/pasted translation of the return policy from the website in question:

Our online store return policy means that if you are not completely satisfied with the products you received, you can return them within 14 days of receipt, provided they are in their original resale condition. Once returned, you have the right to receive an exchange or a refund, which will not include the original shipping and packaging costs. We are unable to refund or exchange items that appear to have been worn, washed, or are not in their original condition. This does not affect and adds to your statutory rights as a consumer. Please attach the completed return form to your order, as failing to do so could delay the processing of the return. Ensure that all returned items are well-packaged, so they are not damaged during shipping. Make sure all return parcels are sent via an insured and trackable service, as we cannot be held responsible for items damaged or lost during the return. Note: the above information only applies to returns of goods purchased on the end clothing website, and not in any of our retail stores. Please see the store for that information.

You must surely have a return option in your customer area.
Otherwise, the easiest thing is to contact them directly.