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The concept behind this product is based on the special material used, shrinking rubber, which not only reduces in size with hot air but also with hot water. There is therefore a relationship between the content and the container, since the temperature

of boiling water is the same temperature needed to shrink the rubber, transforming each one into a unique product. On the functional side, the air in the gap between the rubber and the cup allows the user to hold the cup without burning their hands.

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