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In case of drinking out of existing-bottle, I can be polluted by oral bacteria. Drinking without touching your lips to the existing-bottle, it's easy to spill out and needs a skill.
CLEAN DRINKING has a board that helps you can drink not using cup and no-touching lips.
If you touch your lips to the board and drink water, the board is designed that water completely goes into your mouth. And lips don't touch the mouth of bottle so it might not spread germs.
Four corners of the board have different number of furrow. If many users use this bottle, users can drink using different parts of board.
Yongin-si, Gyeonggi-do, South Korea
Seoul, South Korea