The package contains 56 pieces: a set of 7 plastic zipper storage bags of different sizes, each with 8 pieces. The sizes are: A3-430*295mm，B4-390*275mm，A4-340*240mm，B5-290*210mm，A5-240*180mm，B6-190*140mm，A6-160*120m。 It can help you organize various miscellaneous items to meet your daily life and work needs. Manufacturers recommend using it for children aged 3 and above. Durable and portable: The zipper file bag is made of thick vinyl material, which is waterproof and moisture-proof. Each metal zipper is equipped with a sturdy and durable rope loop, which can be used as a hanging loop for easy hanging. Moderate transparency design: The zipper storage bag adopts a moderate transparency design, which can protect the privacy of your important documents and clearly display the items inside the bag. Easily categorize various items, conveniently store them in backpacks and travel bags, and quickly find the items you need. Widely used: The size combination of transparent zipper storage bags is designed to meet various storage needs. Very suitable for storing important documents, electronic devices, small books, etc. Suitable for use in offices, schools, and homes