Starsource A4 Size Plastic 13 Compartments File Document Letter Organizer Holder Expending File Accordion Tote Bag The Document Holder Briefcase is made of PP material which offer waterproof function for you. Dimension: 330x300x40mm/12.99"x11.81"x1.57",Material:PP 13 clear pockets expand to hold important letters and documents.Included 12 tabbed dividers. The letter sticker inside is for assorting different documents. A great co-woker for people who often go to businesstrip to carry commercial documents.