If there is neither water leakage nor damage to the vacuum insulation, you can continue using it.
How to check the vacuum insulation:
Pour boiling water into the tumbler.
If the outer surface of the tumbler becomes hot, the insulation is damaged.
If there is neither water leakage nor damage to the vacuum insulation, you can continue using it.
How to check the vacuum insulation:
Pour boiling water into the tumbler.
If the outer surface of the tumbler becomes hot, the insulation is damaged.
For more questions, please contact us via the contact form.