one of the cups already have liquid in between the layers :/
Response from Zwilling.comBy Consumer Relations, February 10, 2026
Thank you for sharing your experience, and we’re really sorry to hear about this. Seeing liquid between the layers can certainly be concerning, especially with a new set. This usually indicates that the seal of the double-wall glass may have been compromised, which can occasionally happen during handling or shipping. Please feel free to reach out to us at hello@zwillingus.com or visit our Support Center at https://www.zwilling.com/us/magazine/support-center.html, and our team would be happy to review this and assist you further.