I've purchased a pair of Skechers, and noticed that one of the shoes is different from the other. I plan to return them by mail, what paperwork I should include inside the return box?

Returning your Skechers shoes by mail is a straightforward process. By following these steps, you can initiate the return and ensure that your unworn or defective items are processed for a refund:
Skechers.com has a return label and form available for download, navigate to the Skechers website's "Orders and Returns" section.
Enter your order number as well as the email address you used to make the purchase.
Choose "Check Status."
Click next to the item(s) you want to return.
After these steps and attaching the pre-paid return label, you can drop off your return at any UPS-authorized shipping center.