Organization lovers, this Kokuyo ring file is about to become your new best friend for keeping documents in order! Designed for B5 size paper (which is about 7.2 x 10.1 inches), this vertical binder holds up to 170 sheets securely with its reliable 2-hole punch system. The dark gray color looks professional and sophisticated, perfect for office, school, or home use. What makes Kokuyo files special is their attention to detail - the rings open and close smoothly, the cover material is durable but not bulky, and everything just works seamlessly. The vertical orientation makes it easy to flip through pages and read documents without removing them from the binder. Whether you're organizing work reports, school assignments, project plans, or personal documents, this ring file keeps everything neatly together and protected. The B5 size is that perfect middle ground - larger than A5 for better visibility but more portable than full A4 binders. It's ideal for presentations, portfolios, or any situation where you need to keep related documents together in a professional-looking package. If you're tired of loose papers and messy folders, this Kokuyo ring file offers that perfect Japanese stationery quality that makes organization actually enjoyable. It's one of those simple office supplies that just works beautifully and makes your life more organized with minimal effort!