Package includes 50 pieces of self-adhesive document storage bags for office, school, and travel use. Size and material - Document folder measures 10 x 7 inches. - Made of lightweight paper for easy handling and transport. Function and versatility - Self-adhesive closure for quick sealing and secure transport. - Suitable for storing files, documents, bills, contracts, receipts, certifications, school test papers, sheet music, and recipes. - This self-adhesive envelope can be used as a mailing envelope, file envelope, document storage bag, document wallet, receipt wallet, envelope, photo envelope, small file folder, or budget envelope. Use scenarios - Office: organize and mail invoices, contracts, receipts, and certificates in clearly labeled bags. - School: keep test papers, worksheets, sheet music, and project recipes neatly grouped. - Travel: collect and hold travel documents, receipts, and photos for easy access on the go.