Based on this product's specifications, here are some alternatives and similar models
Document folder Strigo SF008 transparent A5 vertical polypropylene sleeve
Summary description:
Strigo SF008 is a transparent vertical A5 document folder made of polypropylene (PP). Designed to hold and protect A5 documents, letters and small notebooks, it provides water-resistant, lightweight storage and easy visibility of contents. Suitable for office, school and home use for organizing, transporting and protecting papers and receipts.