HERMA 19160 Ring Binder DIN A4 Translucent Black Slim 2 Rings Sturdy Plastic 25mm Wide Transparent Ring Binder for School and Office Ring Binder Folder : Amazon.de: Stationery & Office Supplies
12 x A5 Slim Ring Binder Book + 10 Plastic Punched Clear Pockets Small Folder : Amazon.de: Stationery & Office Supplies
Ark A4 2 Ring Binder 15mm Clear (Pack of 3) : Amazon.de: Stationery & Office Supplies
Exacompta A4 Flexible Polypropylene Slim Ring Binder 20mm Spine -Pack of 5 | eBay
Kokuyo Campus Adapt Slim Binder - A4 - 30 Rings - White by B. Toys : Amazon.de: Bürobedarf & Schreibwaren
HERMA 19166 Ring Binder DIN A4 Translucent Dark Blue Slim 2 Rings Strong Plastic 25mm Wide Transparent Ring Binder for School and Office Ring Binder Folder : Amazon.de: Stationery & Office Supplies
Maruman Kurufit Lose Blatt Papier Binder. B5/A5/A4 Leicht und Schlank, Sie Sind Einfach Zu Tragen Um. Ideal Wahl für Studenten| | - AliExpress