File holder 1)paper material ,2,3,4ring binder, 2)custom design is welcome 3)best quality and professional work folder,file folder ... colors as well as the common 4 color(CMYK)process. 3) Materials: 157g art paper, duplex board with black back, copper ... the pocket3) 4C/0C printing with customized logo and design2,3,4 ring binder for holding fileRemarks: the file folder has insert ...