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overtunbler / overtunbler


When using tumbler, you usually spill the drinks inside of tumbler frequently.
There is a sliding type of button in the part of tumbler's cap.
It can be opened if you slide it. Also once you detach from it, it closes its cover automatically so there's no possibility of pouring contents so anyone can use it with convenience.


Hanseo university

Hanseo university
Incheon, South Korea

song i kim,
Hanseo university