To protect your files and reporter from water or dust. 11, 16,29,30 holes punched pockets Size: A4, F/C, A5, B5,Thickness: 0.025mm, 0.03mm, 0.035mm, 0.04mm, 0.045mm, 0.05mm, 0.06mm, etc Colors of binding edge: white, red, blue, green, yellow,etc PP sheet protector