Based on this product's specifications, here are some alternatives and similar models
Document Sleeve D.Rect A4 30µm, Polish-style punched, 100 pcs — transparent protective A4 pocket
Summary description:
D.Rect A4 document sleeves are transparent protective pockets for A4 sheets, made from 30 µm (micron) film. Pack contains 100 sleeves with Polish-style punch holes for filing in binders. Designed to protect printed pages, photos and documents from dirt and moisture, suitable for office, school and archival use.