Based on this product's specifications, here are some alternatives and similar models
Thermobind cover pavo 8011582, leather-structure A4, 4 mm spine, blue back, transparent front
Summary description:
Thermobind cover by pavo (MPN 8011582) for A4 documents featuring a leather-structure blue back made of cardboard and a transparent front. With a 4 mm spine it secures thin reports, presentations and single-sheet collections using thermal binding machines. Suitable for office, school and home use where a professional, protective cover is required.