---
product_id: 218815186
title: "Campus Smart Ring Binder, A5 Black Refillable Binder Notebook 20 Holes with 10 Extra Loose-Leaf Paper, Up to 25 Filler Papers for Work & Study, Japan Import (RU-SP131D)"
brand: "kokuyo"
price: "$31"
currency: NZD
in_stock: true
reviews_count: 5
category: "Kokuyo"
url: https://www.desertcart.nz/products/218815186-campus-smart-ring-binder-a5-black-refillable-binder-notebook-20
store_origin: NZ
region: New Zealand
---

# 20-hole precision binding Smart lock ring system Holds up to 25 sheets Campus Smart Ring Binder, A5 Black Refillable Binder Notebook 20 Holes with 10 Extra Loose-Leaf Paper, Up to 25 Filler Papers for Work & Study, Japan Import (RU-SP131D)

**Brand:** kokuyo
**Price:** $31
**Availability:** ✅ In Stock

## Summary

> 🖤 The smart binder that means business—stay organized, stay ahead.

## Quick Answers

- **What is this?** Campus Smart Ring Binder, A5 Black Refillable Binder Notebook 20 Holes with 10 Extra Loose-Leaf Paper, Up to 25 Filler Papers for Work & Study, Japan Import (RU-SP131D) by kokuyo
- **How much does it cost?** $31 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/218815186-campus-smart-ring-binder-a5-black-refillable-binder-notebook-20)

## Best For

- kokuyo enthusiasts

## Why This Product

- Trusted kokuyo brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Sleek & Slim Design:** Ultra-thin A5 binder fits effortlessly in your bag, perfect for on-the-go professionals.
- • **Smart Ring Lock System:** Innovative lock mechanism prevents accidental openings, securing your documents with ease.
- • **Customizable & Refillable:** Add up to 25 sheets with multiple paper styles available—grid, plain, or ruled—to match your workflow.
- • **360° Fold & 180° Lay Flat:** Flip the cover fully back or lay flat for seamless note-taking during meetings or study sessions.
- • **Premium Kokuyo Paper Included:** Comes with 10 sheets of archival-quality, pH-neutral Sarasara loose-leaf paper for smooth writing.

## Overview

The Kokuyo Campus Smart Ring Binder is a compact, refillable A5 notebook binder featuring a 20-hole system and a secure smart lock ring. Designed in Japan, it offers a slim profile with a frosted polypropylene cover, holds up to 25 sheets of premium Kokuyo Sarasara loose-leaf paper, and supports 360° folding and 180° lay-flat functionality for effortless writing during work or study.

## Description

desertcart.com : Kokuyo Campus Smart Ring Binder, A5 Black Refillable Binder Notebook 20 Holes with 10 Extra Loose-Leaf Paper, Up to 25 Filler Papers for Work & Study, Japan Import (RU-SP131D) : Office Products

Review: 書きやすくて使いやすいですが、リングが小さいので紙を多く綴じると、めくりにくくなります。当たり前ですが、、、、、
Review: 梱包もとっても丁寧でした。 仕事で使うのはこれが一番です。

## Features

- [Notebook-Like Binder] A5 Kokuyo's Campus Smart Ring binder notebook, 20 holes 8.7x6.2 inches sprial notebook binder has frosted PP black cover, and the maximum capability is 25 sheets loose leaf binder papers.
- [Smart Ring System] First, make sure the stopper is unlocked. To take off the lock, place your finger through the bottom hole of the lock and push it out to the left. Once you get stuck here, you may grab onto the bottom tabs on the side and pull those out, then hold the lock and pull it up . Second, open the binder rings, press the plastic button on the top. Third, after you have replaced papers, pinch the rings together, the binder will be closed.
- [Ultra-thin and lock] The thin binder allows you to put the notebook binder into your bag stress-free and save space. Because of the smart ring binder design that is easy to open and close, the slim binder has a lock keeps the rings from accidentally opening, so you can securely carry this notebook in your bag.
- [360 Fold 180 Lay Flat] Great refillable notebook binders for meetings and classes, they not only lay flat for writing, but the cover flips back to save space on your desk. The slightly wider and frosted cover protects the index tabs from damage and makes them clearly visible.
- [10 Kokuyo Original Papers] The Campus notebook binder contains instruction pages and 10 sheets of A5 Kokuyo Campus Sarasara loose-leaf paper, each with 28 lines of 6mm dotted lines. The paper is pH neutral and of archival quality. Notebook-like binders have a maximum capacity of 25 sheets. Kokuyo also offers Grid, Plain and Ruled styles of loose-leaf paper.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B075SX6VQP |
| Best Sellers Rank | #122,038 in Office Products ( See Top 100 in Office Products ) #537 in Round Ring Binders |
| Brand | KOKUYO |
| Color | Black |
| Cover Material | R-PP |
| Customer Reviews | 4.1 4.1 out of 5 stars (497) |
| Date First Available | November 2, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 2.11 ounces |
| Item model number | ル-SP131D |
| Manufacturer | KOKUYO |
| Manufacturer Part Number | ル-SP131D |
| Material Type | Polypropylene |
| Number of Holes | 20 |
| Product Dimensions | 0.51 x 6.93 x 8.7 inches |
| Sheet Size | A5 Inches |
| Size | A5 |

## Product Details

- **Binding:** Unknown Binding
- **Brand:** KOKUYO
- **Color:** Black
- **Cover Material:** R-PP
- **Manufacturer:** KOKUYO
- **Paper Dimensions:** A5
- **Product Dimensions:** 8.7"L x 6.2"W
- **Sheet Size:** A5 Inches
- **Style:** Up to 25 sheets
- **Unit Count:** 1.0 Count

## Images

![Campus Smart Ring Binder, A5 Black Refillable Binder Notebook 20 Holes with 10 Extra Loose-Leaf Paper, Up to 25 Filler Papers for Work & Study, Japan Import (RU-SP131D) - Image 1](https://m.media-amazon.com/images/I/71F+i3xcQqL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ Review
*by 山***一 on November 17, 2025*

書きやすくて使いやすいですが、リングが小さいので紙を多く綴じると、めくりにくくなります。当たり前ですが、、、、、

### ⭐⭐⭐⭐⭐ Review
*by き***こ on June 18, 2025*

梱包もとっても丁寧でした。 仕事で使うのはこれが一番です。

### ⭐⭐⭐⭐⭐ Review
*by B***F on December 7, 2020*

とにかく、軽くて薄い。サイズも良い。持ち歩きや、学習の普段使いに最高です。丈夫さも問題なし。 購入前は少ないと思っていた25枚の保管枚数ですが、全然困りません。求めていたものは、これでした。

## Frequently Bought Together

- KOKUYO Campus Smart Ring Binder Notebooks, A5, 25 Capacity, 20 Rings, Black, Japan Import (RU-SP131D)
- Kokuyo Campus Loose Leaf Paper for Binders, Sarasara Smooth Writing, A5, 5mm Grid Ruled, 20 Holes, 60 Sheets, pH Neutral, Bleed Resistant, 75gsm, Japan Import (NO-807S-5)
- Kokuyo Campus Loose Leaf Paper - Sarasara - A5 - Dotted 6 mm Rule - 20 Holes - 100 Sheets

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-03-02*