Compiled from 3 sources; we haven't tested this product ourselves yet. How we research
Quick answer
The Kokuyo Sooofa Soft Ring Notebook A6 is a small ring notebook with soft D-shaped rings, 80 micro-perforated sheets and a 4 mm grid in warm gray. Its polypropylene cover has an elastic band, a notch for a pen clip and a clear pocket. Kokuyo lists it at ¥710 (about US$4.50) before tax in green, light blue and pink.
Polypropylene cover, woodfree paper, soft D-shaped rings (Kokuyo's material for the rings isn't stated on this page)
Price range
$under $5 per notebook
Colors
Green
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Notes on these facts
Made by KOKUYO Co., Ltd.. Country of manufacture not stated: Kokuyo's product page for the A6 Sooofa doesn't state a country of manufacture. Kokuyo is based in Osaka, Japan. Price: example listing.
Colors: names per Kokuyo (English site), checked November 3, 2026. Kokuyo lists green, light blue and pink for the A6 Sooofa. Tints were sampled from Kokuyo's product photos of the line. Tints are representative, not measured. Shops stock different colors.
Price bands are typical US retail, checked October 2026. Conversions to US dollars are approximate, at October 2026 rates (US$1 = ¥158 = ₩1,330 = NT$32.5 = CN¥6.7 = SEK 9.9 = DKK 6.7 = ₺49.6 = C$1.41 = A$1.43 = CZK 21.7; €1 = US$1.12; £1 = US$1.32; CHF 1 = US$1.21).
Key takeaways
The A6 Sooofa has 80 sheets of woodfree paper ruled in a 4 mm grid, listed by Kokuyo at 148 mm tall and 119 mm wide.
Its D-shaped soft rings are compact and flex, so Kokuyo says your hand doesn't catch on them when you write to the page edge.
The polypropylene cover has an elastic band, a notch at the top that holds a pen by its clip, and a clear pocket for loose papers.
Kokuyo lists the A6 at ¥710 (about US$4.50) before tax in green, light blue and pink, so it sits in our $ band.
Sooofa is a separate line from Kokuyo's Campus Soft Ring Notebook; it adds a cover with a band and pocket and is made in A7 to A5 and B6.
What is the Kokuyo Sooofa Soft Ring Notebook?
It is Kokuyo’s ring notebook for people who want the flat-opening ring format without the hard rings. Kokuyo calls it “simple yet smart and relaxed”, for use on and off the job, and builds it on the “new sensation soft ring” it developed for its Soft Ring notebooks. The A6 version is the pocket-sized member of a line that also includes A7 memo pads, B6 and A5.
It is not the same product as the Campus Soft Ring Notebook that our Kokuyo Soft Ring A5 guide covers. Both use soft rings, but the Sooofa has its own cover, paper ruling and colors.
Kokuyo Sooofa A6 specs
Spec
Value
Maker
Kokuyo Co., Ltd. (Japan)
Format
Ring notebook, cut-off type with micro-perforations
Sheets
80
Ruling
4 mm grid, in a warm gray
Inner sheet
148 mm tall, 119 mm wide (Kokuyo’s listing)
Paper
Woodfree paper
Cover
Polypropylene, with elastic band, pen-clip notch and clear pocket
The rings are D-shaped and soft, which keeps the ring edge slim and lets you write to the page edge. Kokuyo says the notebook keeps the good parts of a ring notebook, opening flat and folding back on itself for small spaces, while the rings spare your hand when it reaches the edge of the page. The D shape also means the ring is “compact” instead of bulky.
The page is cut-off type: micro-perforations beside the rings let you tear out only the sheets you need. Kokuyo doesn’t name the ring material on this page; our A5 guide covers the olefin resin of the older Soft Ring line.
What is the 4 mm grid like?
It is a 4 mm square grid printed in a “gentle, friendly warm gray”. Kokuyo describes the 80 pages as plenty of space for writing. A retailer’s description adds that the grid suits notes, lists, planning, diagrams and journaling; that is the shop’s wording, not a Kokuyo test. We haven’t measured the paper’s weight, since Kokuyo only says woodfree paper.
What does the cover do?
The polypropylene cover carries three small conveniences: an elastic band, a pen-clip cutout and a pocket. Kokuyo says the PP cover makes the notebook easy to carry. The band holds it shut, the cutout at the top lets a pen hang by its clip, and the included PP pocket holds loose papers.
Which Sooofa size and color should you choose?
The A6 suits a bag or jacket pocket; choose A5 for desk notes. Kokuyo’s series page lists the line in A7 memo, A6, B6 and A5. The A6 comes in green, light blue and pink. The A5 and B6 add warm gray and yellow, and B6 also has black and light gray. Kokuyo’s list prices before tax on that page were ¥710 (about US$4.50) for A6, ¥840 (about US$5.30) for B6 and ¥990 (about US$6.30) for A5. For another small Japanese notebook see the Kokuyo Campus notebook.
How much does the Kokuyo Sooofa A6 cost?
Kokuyo lists it at ¥710 (about US$4.50) before tax, which puts it in our $ band (under US$5). We converted at the rate in our FX note. We didn’t confirm a US shop price, and import shops add their own markup and shipping, so your price may land in the $$ band.
Where is the Kokuyo Sooofa made?
Kokuyo’s page doesn’t say. Kokuyo is an Osaka company; for its history see our Kokuyo history. We don’t give a country of manufacture for the Sooofa.
Frequently asked questions
What is the Kokuyo Sooofa notebook?
It is a Kokuyo ring notebook line with soft D-shaped rings, a polypropylene cover, an elastic band and a pen-clip notch. Kokuyo describes it as simple, smart and relaxed, for both work and play.
How many sheets does the Kokuyo Sooofa A6 have?
80 sheets, per Kokuyo. They are woodfree paper ruled in a 4 mm grid and micro-perforated, so single sheets tear off neatly.
What size is the Kokuyo Sooofa A6?
Kokuyo lists the inner sheet at 148 mm tall and 119 mm wide. It doesn't publish the cover size on that page.
What colors does the Kokuyo Sooofa A6 come in?
Green, light blue and pink, per Kokuyo's A6 listing. The A5 and B6 sizes add warm gray and yellow, and B6 also comes in black and light gray.
Do the soft rings get in the way of writing?
Kokuyo says not: the ring is D-shaped and compact, so you can write to the edge without your hand hitting it. We haven't tested the A6 ourselves.
Can the Sooofa hold a pen?
Kokuyo gives the cover a cutout at the top where you can hang a pen's clip, so a clip pen stays with the notebook.
How is the Sooofa different from the Kokuyo Campus Soft Ring Notebook?
Kokuyo sells them as separate lines. The Sooofa's cover is polypropylene with an elastic band and a pocket, and its paper has a 4 mm warm-gray grid, while our guide to the Campus-line A5 describes dot-ruled pages and translucent covers.
What does Kokuyo list the Sooofa A6 for?
Kokuyo's list price is ¥710 (about US$4.50) before tax. We didn't confirm a US shop price.
