1,Colorful a4 paper holder 2,Make by paper, w/printing 3,Foldable 4,Flap pack to save space and ... resistance,nontoxic.Advantage:1,File holder is made by cardboard,coverd by art paper , all are the recycle ... material.2,Fashionable desing and color. 3,Fixup construction make the holder more stronger and durable. 4 ... a satisfaction reply without delay. Colorful a4 paper holder