Based on this product's specifications, here are some alternatives and similar models
Document pocket BCF Punched Pocket Cristal Clear A4, 60 µm, punched, pack of 100
Summary description:
BCF Punched Pocket Cristal Clear A4 is a transparent document sleeve with 60 µm thickness and pre-punched holes for insertion into binders. Supplied in a pack of 100, it protects A4 papers from dirt and moisture while keeping contents visible. Suitable for office, school and archive use, it streamlines filing and presentation of documents.