Basic Principle

Daily Cleaning: Hand wash the interior and exterior with warm water and neutral detergent. Do not use steel wool (for scratch-resistant surfaces).

Dry Thoroughly: Drain inverted or blot dry with paper towels, especially around the seal. The seal should be dry before resealing.

Maintaining Key Parts

Seal: Remove, clean, and disinfect in the sun weekly. Replace if aging or cracking occurs.

Valve Button/Key: Wipe the gap with a cotton swab dipped in alcohol to ensure smooth opening and closing.

Temperature Control: Avoid sudden changes in temperature (e.g., from ice to boiling water) to prevent deformation or bursting of the inner container.

Long-Term Storage

Store the cup after it is completely dry, leaving the lid ajar for ventilation. A desiccant may be used to prevent moisture.