









📚 Unlock your productivity with the Campus Smart Ring Binder—where style meets function.
The Campus Smart Ring Binder by Kokuyo is a Japanese-imported, A5-sized refillable notebook binder featuring a durable frosted polypropylene cover, a secure smart lock system, and a 360° foldable design. It holds up to 25 loose-leaf sheets, including 10 premium Kokuyo Sarasara papers with 6mm dotted lines, making it an ideal compact organizer for professionals and students seeking a sleek, reliable, and customizable note-taking solution.


| Manufacturer | KOKUYO |
| Brand | KOKUYO |
| Model number | ル-SP131D |
| Product Dimensions | 1.3 x 17.6 x 22.1 cm; 60 g |
| Color | Black |
| Cover Material | R-PP |
| Material Type | Polypropylene |
| Size | A5 |
| Sheet Size | A5 |
| Number of Holes | 20 |
| Manufacturer Part Number | ル-SP131D |
| Item Weight | 60 g |
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