Based on this product's specifications, here are some alternatives and similar models
Ring binder LEITZ 10471020 A4, Polyfoam, 312×82×318 mm, Red
Summary description:
LEITZ 10471020 is an A4 ring binder made of durable polyfoam for document storage. Dimensions: 312 × 82 × 318 mm (width × depth × height). Designed to hold A4 papers, it features a ring mechanism for organized filing and a capacious spine for multiple documents. Suitable for office, home or study use; protects and arranges paperwork neatly.