| 摘要 |
PURPOSE: A multi-stage mat transformable to a castle is provided to enable users to change the shape of the mat into a castle shape for playing by standing the mat. CONSTITUTION: A transformable multi-stage mat transformable to a castle includes a multi-stage mat main body(10), and a connection member(20). The multi-stage mat main body includes plural mat members connected to each other to be overlapped into multiple stages. A square concavo-convex unit is continuously formed on the upper edge of the multi-stage mat main body. The connection member is interconnected to the side surface of an outermost mat member. One of the mat members includes a rotatably attached opening-closing door.
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