High-quality material - Made of high-quality plastic, light and sturdy, hard frosted shell design, comfortable to touch, highly transparent inner pages, convenient and clear reading of documents, pockets with tight edges, durable.Humanized design - The inner pages are equipped with special grooves for easy access to documents, and are equipped with label slots for easy classification and management, and quick search. The rounded corner design is safe and not easy to scratch fingers, and can be laid flat for easier reading.Large storage capacity - There are 40 pockets in total, each pocket can store documents on both sides, providing ample storage space. The plastic material is waterproof and moisture-proof, which can effectively protect important documents from damage.Applicable to A4 size - The inner page size is 11.7 inches * 8.45 inches, which is suitable for most documents, such as presentation materials, learning materials, contract certificates, music scores, paintings, etc., to help organize and archive, and save precious memories.Widely applicable - Suitable for students, professionals and other people who need to organize a large number of documents, help classify and archive, and improve work and study efficiency. A variety of bright colors are available to add a good mood to daily life.