Material & Size - Made of carefully selected 250gsm kraft paper, wear resistance, durable for long time use,can be recycled, is good for protecting our environment.A4 size: 310x235mm/12x9in.The size of kraft paper folders is slightly bigger than A4. better protect important documentsReserved Cards Slot - Single-sided pocket design is easy to access to the documents, and dedicated two holes in the bottom, is convenient to attach cards or labels for quick file identification10pcs professional presentation book - It come with 10 packs of paper file folder, can help to organize important documents, keeping your files in order to improve the efficiencyPortable - The folio and nontransparent design is very convenient for opening, closing and securing contents.Lightweight make it convenient to carry for work, business contract documents, office meeting, school student/teacher test paper, travel, storage, outdoor activities, and casual daily useBroad use - Perfect for daily use, such as school subjects, office documents files, traveling A4 files and business cards. It can avoid messy documents, waste a lot of time looking for documents, affecting mood and affecting work efficiency, is a good filing assistant