--- title: "KOKUYO Campus Eraser: Erases Well, Hard to Break" canonical: "https://stationerytimes.com/guides/kokuyo-campus-eraser/" description: "KOKUYO's Campus eraser that erases well but doesn't break easily: parallelogram and rectangle shapes, sizes, the 66° design and its 2026 Japan Stationery Award." category: "Accessories" type: "Eraser" published: 2026-10-23 updated: 2026-10-23 author: "Ellis Penhale" publisher: "Stationery Times" sources: 9 products: - name: "KOKUYO Campus eraser that erases well but doesn't break easily" brand: "KOKUYO" brand_origin: "Japan" made_in: "Not stated" material: "PVC body (PVC-P); sleeve with recycled pulp" released: "2025-09" price_band: "$ (under $5 per item, typical US retail, October 2026)" manufacturer: "KOKUYO Co., Ltd." model: "ESR-C02 (parallelogram M, white)" mpn: "ESR-C02" gtin: "4901480395296" url: "https://www.kokuyo.com/stationery/series/campus/orenikui-eraser/" --- # KOKUYO Campus Eraser: Erases Well, Hard to Break > The KOKUYO Campus eraser that erases well but doesn't break easily (よく消えるのに折れにくい消しゴム) is a PVC eraser launched in Japan in September 2025. A hybrid formula pairs graphite-grabbing and break-resisting ingredients. It comes as a 66° parallelogram or a rectangle, in two sizes, white or black, and won a 2026 Japan Stationery Award. - URL: https://stationerytimes.com/guides/kokuyo-campus-eraser/ - Category: Accessories - Author: Ellis Penhale - Published: 2026-10-23 - Updated: 2026-10-23 ![KOKUYO Campus parallelogram M and rectangle M erasers in sky-blue sleeves drawn to scale at 54 mm, with an inset of the 66° parallelogram end](https://stationerytimes.com/images/raster/kokuyo-campus-eraser-16x9.png) *Parallelogram M and Rectangle M, both 54 mm long (drawn at 1 mm = 4 px).* Original drawing (SVG): . Drawings © 2026 Stationery Times, reusable with credit under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). ## Product facts | Product | Brand | Brand origin | Made in | Material | Released | Price range (typical US retail, October 2026) | |---|---|---|---|---|---|---| | KOKUYO Campus eraser that erases well but doesn't break easily | KOKUYO (by KOKUYO Co., Ltd.) | Japan | Not stated | PVC body (PVC-P); sleeve with recycled pulp | 2025-09 | $: under $5 per item | - Made in (KOKUYO Campus eraser that erases well but doesn't break easily): Not stated. KOKUYO's Japanese spec pages, RX Japan's winners page and DIME don't state a country of manufacture. ## Key takeaways - KOKUYO lists four sizes: parallelogram M 25 × 54 × 13 mm, parallelogram S 20 × 42 × 13 mm, rectangle M 24 × 54 × 12 mm and rectangle S 18 × 42 × 12 mm. - KOKUYO's list prices run from ¥90 (about US$0.60) to ¥150 (about US$0.90) before tax for a single eraser. - KOKUYO says development took 5 years, and testers tried 7 prototypes in 3° steps before it settled on a 66° parallelogram. - It won a 35th Japan Stationery Award (2026) in the sustainable category, announced by RX Japan on June 9, 2026. - JetPens lists the medium parallelogram in the US, and Japan-import packs appear on Amazon.com. ## What is KOKUYO's eraser that erases well but doesn't break easily? **It is a Campus-brand PVC eraser from KOKUYO, sold in Japan since September 2025, made to erase cleanly without snapping in half.** KOKUYO's Japanese name, よく消えるのに折れにくい消しゴム, says exactly that. KOKUYO explains the trade-off on its page: soft erasers erase well but break, and hard ones don't break but leave marks. Its answer is a "hybrid" formula that locks a graphite-grabbing ingredient inside a stiffer skeleton ingredient. It is the first eraser under Campus, KOKUYO's best-known notebook brand; see our [KOKUYO Campus notebook guide](https://stationerytimes.com/guides/kokuyo-campus-notebook/) for the notebooks. ## What sizes and shapes does it come in? **Two shapes, a parallelogram and a rectangle, each in M and S, in white or black.** All figures are from KOKUYO's Japanese spec pages, read October 23, 2026. | Version | Code (white / black) | Size (W × L × T) | List price before tax | |---|---|---|---| | Parallelogram M | ESR-C02 / ESR-C02D | 25 × 54 × 13 mm (1.0 × 2.1 × 0.5 in) | ¥150 (about US$0.90) | | Parallelogram S | ESR-C01 / ESR-C01D | 20 × 42 × 13 mm (0.8 × 1.7 × 0.5 in) | ¥100 (about US$0.60) | | Rectangle M | ESR-C12 / ESR-C12D | 24 × 54 × 12 mm (0.9 × 2.1 × 0.5 in) | ¥140 (about US$0.90) | | Rectangle S | ESR-C11 / ESR-C11D | 18 × 42 × 12 mm (0.7 × 1.7 × 0.5 in) | ¥90 (about US$0.60) | KOKUYO also sells 1-, 2-, 3- and 5-packs. The body is PVC, and the paper sleeve contains recycled pulp and has perforations, so you tear it down as the eraser wears instead of cutting it. ![KOKUYO Campus eraser end and top views to scale: parallelogram M 25 × 13 mm and S 20 × 13 mm, rectangle M 24 × 12 mm and S 18 × 12 mm, 54 or 42 mm long](https://stationerytimes.com/images/kokuyo-campus-eraser-shapes.svg) *The four shapes, end and top views at 1 mm = 3.2 px.* ## Why is it a parallelogram? **KOKUYO says the slanted block is easier to lift off a desk and to press with little force.** It developed the shape through HOWS DESIGN, its inclusive design process, with three workshops that included people with weak grip. KOKUYO's magazine says the project took five years and that testers tried seven prototypes, changed in 3° steps, before it chose 66°. Because some testers still preferred a plain block, KOKUYO kept the rectangle too. The designer told KOKUYO's magazine the eraser feels a little softer than KOKUYO's Resare Premium but still erases small areas precisely. That is a maker's description; we haven't tested it yet. ## Why did it win a Japan Stationery Award? **RX Japan gave it a 2026 Japan Stationery Award in the sustainable category, citing the hybrid formula and the inclusive design process.** The 35th award named 12 winners on June 9, 2026; see our [Japan Stationery Award 2026 winners](https://stationerytimes.com/guides/japan-stationery-award-2026-winners/) for the full list. RX Japan's entry calls the process a step toward well-being for each user. An eraser that doesn't snap is also one you finish instead of losing in pieces, and KOKUYO marks the line with its own resource-recycling concept logo. ## How does it compare with other Japanese erasers? **It sits between soft, clean-erasing blocks and firm precision erasers, and its main difference is shape.** | Eraser | Shape | Known for | |---|---|---| | KOKUYO Campus (this eraser) | Parallelogram or rectangle | Break resistance, easy pickup | | [Tombow MONO](https://stationerytimes.com/guides/tombow-mono-eraser/) | Rectangle | Classic clean erasing | Our [best Japanese erasers](https://stationerytimes.com/guides/best-japanese-erasers/) compares more of them. ## Can you buy it in the US? **Yes, in part: JetPens lists the medium parallelogram, and Amazon.com has Japan-import packs.** When we checked on October 23, 2026, Amazon.com showed a two-pack of 3-piece parallelogram M sets as a Japan import. A single eraser sits in our $ band (under $5); the black and S sizes are easier to find from Japanese stores or proxy services. ## Where is it made? **KOKUYO doesn't say.** Its Japanese spec pages give the materials and JAN codes but no country of manufacture, and neither RX Japan nor DIME states one. ## Frequently asked questions ### What does the Japanese name of the KOKUYO Campus eraser mean? よく消えるのに折れにくい消しゴム means "an eraser that erases well but doesn't break easily," which is also its whole pitch. Retailers in English often shorten it to the KOKUYO Campus eraser. ### Why is the KOKUYO eraser shaped like a parallelogram? KOKUYO says the slanted shape is easier to pick up off a desk and to press with little force. People with weak grip tested prototypes in workshops, and KOKUYO picked a 66° angle from seven versions. ### Is the KOKUYO Campus eraser soft or hard? In between. KOKUYO says it is a little softer than its Resare Premium eraser, but firm enough to erase small areas precisely. ### Can I buy the KOKUYO Campus eraser in the US? Yes. JetPens lists the medium parallelogram, and Japan-import multipacks are on Amazon.com. Other sizes and the black versions are easier to find from Japanese stores. ### What award did the KOKUYO Campus eraser win? A 35th Japan Stationery Award (日本文具大賞 2026) category prize in the sustainable section, one of 12 winners named by RX Japan on June 9, 2026. ### Is the KOKUYO Campus eraser made in Japan? KOKUYO doesn't say. Its Japanese spec pages list the materials but no country of manufacture. ## Sources - [KOKUYO (Japanese): キャンパス よく消えるのに折れにくい消しゴム series page (lineup and pre-tax prices; read October 23, 2026)](https://www.kokuyo.com/stationery/series/campus/orenikui-eraser/) - [KOKUYO (Japanese): 平行四辺形M黒 ESR-C02D spec page (25 × 54 × 13 mm, PVC-P, JAN 4901480436425)](https://www.kokuyo.com/stationery/category/eraser/eraser/18374/) - [KOKUYO (Japanese): 平行四辺形M白 ESR-C02 spec page (JAN 4901480395296)](https://www.kokuyo.com/stationery/category/eraser/eraser/5058/) - [KOKUYO (Japanese): 長方形M黒 ESR-C12D spec page (24 × 54 × 12 mm)](https://www.kokuyo.com/stationery/category/eraser/eraser/18381/) - [KOKUYO magazine (Japanese): 消しゴムの新境地！平行四辺形が追加で叶えた持ちやすさ (October 2, 2025; 5-year development, 66°)](https://www.kokuyo.com/magazine/kokuyo/topics-hows-design-campus-eraser/) - [RX Japan, ISOT: 2026年 受賞製品一覧 (Japan Stationery Award 2026 winners; read October 23, 2026)](https://www.lifestyle-expo.jp/summer/ja-jp/about/isot/award/winning-products.html) - [@DIME: コクヨのキャンパス よく消えるのに折れにくい消しゴムが日本文具大賞2026を受賞 (on sale September 2025)](https://dime.jp/genre/2131131/) - [JetPens: KOKUYO Campus Eraser, Parallelogram, Medium (found by search October 23, 2026)](https://www.jetpens.com/KOKUYO-Campus-Eraser-Parallelogram-Medium/pd/49422) - [Amazon.com: Kokuyo Campus AMESR-C02-3PX2 eraser, parallelogram M, 3 pieces × 2 (Japan import; read October 23, 2026)](https://www.amazon.com/dp/B0FLBGPQXZ)