PURPOSE: To make possible the manufacture of cover by a vegetable material and make possible the maintenance of the shape by forming paper, where a hardener is applied, into optional shape.

CONSTITUTION: A reinforcing material for shape is obviated by impregnating vegetable natural material pule cloth 1 with a hardener. Moreover, the joint of each pulp cloth 1 is fixed with a transparent quick dry binder 2. As the material of the pulp cloth, a stacked aggregate between natural material pieces 4 such as the leaves, stalks, flowers, etc., of dry grass, trees, etc., is used.