Kobest 5 Pockets Expanding file folder Accordion document Organizer,A4 Size and letter with bouton closure For School and Office uses (Blue) Material: Made of durable, archival quality polypropylene that contains an additional additive allowing it to biodegrade in landfills while leaving no toxic residue. Includes write-on tabs Style and design: Economical choice for efficient filing,very lightweigth,colorfuly Size and Weight: 13"x10"x0.4" & 140g which makes it accommodate more papers and storing more documents; A4 sized and letter size paper. Feature : The expanding file folder as 5 expandable pockets so you can constantly alter the contents based on your needs and comfortable for carrying with a buton closure