Thank you for your review, we’re truly sorry to hear about the trouble with your mugs. That’s absolutely not the experience we want for you, and we understand how disappointing it is to receive items that aren’t usable. To help us investigate the issue and take the appropriate action, please reply to this email and let us know how many mugs were defective. If you can also provide a short video showing the leakage, that will give us a clear view of what’s happening and help us address the problem right away.