A reusable beer cup for implementing SDGs (Sustainable Development Goals). The world's first product using a highly concentrated cellulose fiber molding material, mainly made of wood fiber from thinned wood, is now on the market. A wood-like texture without coloring has been realized and the wood fiber can help improve the strength and create fine beer foams. The work to reduce single usage will help to promote the product in differing situations after August 2019.