Based on this product's specifications, here are some alternatives and similar models
Ring binder Herma A4 neon yellow, polypropylene (PP), 2-ring, spine 25 mm, for A4 sheets
Summary description:
Herma A4 ring binder in neon yellow made of polypropylene (PP). A 2-ring binder designed for storing A4 documents with a 25 mm spine width. Translucent neon color improves visibility while the durable PP material protects papers from dust and light handling. Suitable for office, school and home document organization and archiving.