Which can be found in your 40 Boxes account: https://40boxes.com/account/login or in the order confirmation email, you received after purchasing.
To ensure that your refund is processed quickly and efficiently, you must return your order using the label provided by 40 Boxes; a $10.00 fee will be deducted from your refund total amount, along with any original shipping fees on your order (if applicable). Please keep in mind that if your order contains items from multiple brands, you will require a return label for each brand. If you have any further questions, please contact firstname.lastname@example.org. Return Policy: https://40boxes.zendesk.com/hc/en-us/articles/360057247292-What-is-the-return-policy-