Amazon.com : ACROPAQ - 5 x A4 Slim folders, Slim, Set of 5 in White, 2 Rings - Lever Arch Folder, Ring Binder, A4 Ring Binder, Ring Binder, Ring Binder, A4 Ring
Exacompta Opaque PP A4 White 4 Ring Binder Slim Thin 20mm Lightweight Strong | eBay
K-KEEP [A4 PLUS] Binder - [2 inch] - [Minimalist Series] - The Most Co – MeowCafeShop
Amazon.com : HERMA Ring Binder Translucent in Red, A4, 25 mm Spine, Slim 2-Ring Binder Made of Plastic : Office Products
Leitz A4 Size, R50 Black Marbled 2-Ring Binder, 2" Spine, Bulk Pack of 20 - Bindertek
A5/A4 Slim Ring Binder Presentation Black Folder Solid + 12 Free Punch Pockets | eBay
Amazon.com : Tiger A4 slim (20mm spine) 15mm 2 ring project style ringbinder file assorted solid colours x 1 single folder : Office Products
Amazon.com : HERMA Ring Binder Translucent in Dark Blue, A4, 25 mm Spine, Slim 2-Ring Binder Made of Plastic : Office Products
Amazon.com : HERMA 19712 Ring Binder A4 Translucent Neon Pink Slim 2 Rings Sturdy Plastic 25mm Wide Transparent Ring Binder for School and Office Ring Binder for Kids Boys and Girls : Office Products