* TeTRA CUP is a portable and reusable coffee cup designed to encourage recycling.
* The biggest advantage of TeTRA CUP is its compactness. It can be folded completely flat after use, making it convenient to carry around.
* This presentation proposes a TeTRA CUP recycling system in which coffee drinkers deposit the used TeTRA CUPs to a nearby collection box set at coffee shops.
* The portability of the TeTRA CUP is expected to facilitate the collection of the used TeTRA CUPs.