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There are various oral care products such as toothbrushes, toothpastes and other accessories in the market. Tumbler is one of oral care products that we rarely realize how importance it is. The most concern about tumbler is the water stains at the inner bottom where always carries bacteria to cause illnesses. It is difficult to clean the inner bottom, therefore many people do not use tumbler and unintentionally waste more water. To solve this problem, a new non-traditional designed tumbler is now created to serve people with clean and healthy manners. Made by soft food-grade silicone, the tumbler can be easily turned inside out to dry after u
National Taiwan University of Arts