If there is a defect in the vacuum seal technology, the cup will not retain the temperature properly and may sometimes form condensation. This type of defect is internal and can not be visibly detected, therefore our QC team would not have known.
If you would like to submit a damage claim here, we can get the replacement process started for you right away. And please note, not all defects are covered under our warranty, such as normal wear and tear to exterior finishes and damage due to everyday use.
At this time, we are unable to accept international damage/warranty claims from purchases made outside of swiglife.com. If you purchased your Swig through an international retailer, please contact that retailer directly about a replacement.