Kokuyo's Next-Gen Flagship Prototype and the Best Full-Mesh Office Chairs in 2026

Kokuyo Unveils Its First Full-Mesh Chair Prototype

Last month, news from Tokyo caught the attention of office chair enthusiasts worldwide: Kokuyo unveiled a prototype of its next-generation flagship chair, codenamed C15, with a planned release in 2027.

What makes this announcement particularly noteworthy is that the C15 will be Kokuyo's first-ever full-mesh office chair. The Japanese manufacturer has always approached mesh design unconventionally—the Kokuyo Ing Cloud, for instance, features a frameless backrest with three-dimensionally structured mesh that was genuinely innovative. But technically speaking, it wasn't a full-mesh chair.

Now Kokuyo is entering full-mesh territory, and that raises an intriguing question: When you first saw the Ing Cloud, did it remind you of the Herman Miller Cosm? The organic, flowing silhouette and the sculptural backrest structure share a similar design language. If Kokuyo—a brand known for rethinking sitting itself—is now tackling full-mesh, what system will they build around it?

That curiosity led us to put together this guide: a look at the full-mesh office chairs you can sit in today, and how each brand's approach to mesh differs fundamentally.

Why the Same Material Feels So Different

Everyone knows why mesh chairs are popular in summer: they don't trap heat against your back. But sit in a few full-mesh chairs back-to-back, and you'll quickly realize they feel nothing alike.

Some provide firm, structured support. Others cradle you softly. Still others feel less like sitting and more like wearing the chair. The reason is simple: each brand has a completely different design philosophy when it comes to mesh.

Herman Miller Aeron: Structured, Zoned Support

The Herman Miller Aeron debuted in 1994, at a time when premium office chairs meant thick cushions wrapped in leather. Introducing a full-mesh task chair was a bold move—and it paid off.

The first thing you notice when you sit in an Aeron is the sensation of being held firmly in place. Your body settles into the mesh with a secure, stable feel. This isn't just tight tension—it's the result of the 8Z Pellicle material, which divides the backrest and seat into eight zones, each with different tension calibrated to different body areas. The lumbar zone is taut and supportive; the mid-back is more flexible.

Durability is another hallmark. Since the 2016 remastered Aeron launched, we have not seen a single customer return due to sagging or stretched mesh—a notable track record for a chair that's been on the market for decades.

Okamura Contessa II: Enveloping Comfort

If the Aeron holds you, the Okamura Contessa II envelops you. Okamura is Japan's leading office furniture manufacturer by market share, though it remains less well-known outside Asia. Those familiar with the brand, however, swear by it.

The Contessa II's mesh has a softer, more flexible tension than the Aeron's, delivering immediate comfort the moment you sit down. It feels welcoming and forgiving. The chair also offers sophisticated multi-axis adjustments, making it ideal for users who want to fine-tune the fit to their body with precision.

Herman Miller Cosm: One Continuous Mesh Surface

The Herman Miller Cosm looks more like a sculptural object than a chair. Among full-mesh designs, it's the one that stops you in your tracks visually.

What sets the Cosm apart is its seamless construction: the backrest and seat are formed from a single piece of mesh that flows continuously from top to bottom. Most chairs separate the back and seat structurally; the Cosm erases that boundary.

It also features Leaf Suspension, an auto-harmonic tilt system that responds to your weight and posture without any manual adjustments. You simply sit down, and the chair adapts to you.

Personally, the Cosm was the first chair that came to mind when I saw the Ing Cloud. That's why I'm so curious to see how Kokuyo's C15 will differentiate itself—and what answers it will offer that the Cosm does not.

Kokuyo Ing Cloud: A Different Question Entirely

The Kokuyo Ing Cloud is hard to understand until you've sat in it for a while. That's because Kokuyo started with a different question. Instead of asking "how do we support the body better," they asked "why does sitting for long periods make us tired?"

Their answer: the problem isn't sitting—it's holding the same posture for too long.

So Kokuyo removed the side frames from the backrest and added gliding mechanisms to three points: the seat, backrest, and armrests. No matter which direction you shift, the chair moves with you. The chair encourages micro-movements throughout the day.

This system earned the Ing Cloud the top prize in the Innovative Design category at the Red Dot Design Award 2025. But it's not a full-mesh chair—yet.

Now imagine that movement system combined with full-mesh construction. That's what the C15 prototype promises, and it's why the announcement has generated so much anticipation.

What to Expect from Kokuyo's C15

Details are still scarce, but the C15 represents Kokuyo's first foray into full-mesh seating. Given the brand's track record—challenging conventions around prolonged sitting rather than simply optimizing static posture—it's reasonable to expect the C15 will bring a fresh perspective to the mesh chair market.

Will it combine the Ing Cloud's dynamic movement system with breathable, full-body mesh? Will it prioritize adaptability over adjustment? We'll know more as the 2027 launch approaches.

Comparing Full-Mesh Chairs: What to Look For

If you're shopping for a full-mesh office chair today, here's what distinguishes the leading models:

• Herman Miller Aeron: Zoned tension, firm support, proven long-term durability

• Okamura Contessa II: Softer mesh feel, enveloping comfort, highly adjustable

• Herman Miller Cosm: Continuous mesh construction, auto-harmonic tilt, minimal manual adjustment

• Kokuyo Ing Cloud: Not full-mesh, but a dynamic gliding system that encourages movement throughout the day

Reading about these differences is one thing. Sitting in them is another. The best way to choose is to try several models in person and pay attention not just to initial comfort, but to how each chair supports your natural movements and posture over time.

The Future of Mesh Seating

Kokuyo's entry into the full-mesh category signals that this segment continues to evolve. Mesh is no longer just about breathability or weight reduction—it's becoming a platform for rethinking how chairs interact with the body during long work sessions.

As the C15 details emerge and the 2027 release approaches, we'll continue to track its development and share updates. In the meantime, the current generation of full-mesh chairs from Herman Miller, Okamura, and Kokuyo offers a range of philosophies worth exploring—whether you prioritize firm zoned support, enveloping comfort, sculptural simplicity, or dynamic movement.