All products sold by Aeroloop are digital downloads (PDF files) delivered instantly by email upon purchase. Because of the instant, permanent nature of digital delivery, all sales are final and we do not offer refunds, returns, or exchangesonce a file has been downloaded or the download link has been sent. Please review the product description and preview images carefully before purchasing. If you experience a technical problem — a corrupted file, a broken link, or a missing download email — contact info@aeroloop.co.uk and we'll resend the file or resolve the issue.