BIRCH Ergonomic Chair

$399.00 $599.00

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BIRCH · by ITO Design

BIRCH Ergonomic Chair

$399.00 $599.00

Quick Assembly: Four-step assembly in approximately 3 minutes after unpacking.
Designed by ITO Design: A refined home-office silhouette from the design studio in Nuremberg, Germany.
Korean WINTEX® Mesh: Flocked seat and backrest mesh combines breathability with resilient support.
Die-Cast Aluminum Structure: An aluminum outer back frame and five-star base provide a solid foundation.
Linked Dual-Back Support: Coordinated support for the upper back, lumbar region and sacrum as you recline.
German BOCK Mechanism: Integrated control of seat height, depth, tilt lock and recline tension.

Colour: White

Certification & proof

Explore BIRCH’s design award, GREENGUARD Gold certificate and ANSI/BIFMA test report, with original documents available to view.

View BIRCH awards & documents

A' Design Award

GREENGUARD Gold

BIFMA

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Free standard shipping within the contiguous United States. See processing and delivery terms in our shipping policy.

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$399.00 $599.00

EASY ASSEMBLY

Assemble your BIRCH in about 3 minutes.

BIRCH ergonomic chair with a spine overlay showing dual-back support along the natural S-curve — **Support along your spine** Linked dual-back frame follows your natural S-curve — back, waist, sacrum.

BIRCH adaptive lumbar support tracking the lower back — **3D glide support** Auto-follows your back, actively tracks your lumbar.

Close view of the BIRCH German BOCK control base and chassis — **BOCK control base** German-made: height, seat slide, tilt-lock, and tension.

BIRCH seat-depth slide adjustment — **Seat-depth slide** Glide the seat to fit your leg length.

Cool through long hours

Full Wintex mesh keeps air moving across the seat and back.

German BOCK control base

Quick-control chassis: lift, seat-slide, tilt-lock, and tension.

Made to your body's curve

Contoured to follow your natural spine and posture.

Moves as you move

Support tracks your shifts and stays with you as you settle.

Premium Materials & Engineering

Built for durability, comfort, and everyday performance.

Wintex JRD+ Mesh

High-rebound ergonomic mesh

Abrasion: 100,000 cycles
Composition: 64% elastomer / 28% nylon / 8% polyester
Weight / width: 492 g/YD / 66 in
Colorfastness: grade 4.5 / dry rub >= 4.5

Micro-elastic Mesh

Airflow, rebound, daily contact

Class-4 KGS® gas lift — BIRCH detail — **Class-4 KGS® gas lift**
US BIFMA standard
85 mm stroke
99.99% pure nitrogen
100,000+ safety cycles

Die-cast aluminium base — BIRCH detail — **Die-cast aluminium base**
US BIFMA standard
Single-piece 5-star cast
1,136 kg static-load tested

PU quiet casters — BIRCH detail — **PU quiet casters**
US BIFMA standard
Silent, floor-safe
60 mm diameter
100,000+ durability cycles

Awards & certifications

Independently recognised and tested.

BIRCH has received design recognition, with GREENGUARD Gold certification and an ANSI/BIFMA test report for submitted samples.

**Platinum A' Design Award** Office Furniture Design · 2024–2025

**BIFMA** Structural durability & safety · ANSI/BIFMA

See each original document for its model, configuration, test scope and dates.

Seen up close

Every adjustment, and what it's built from.

Explore the seat, back, armrest, and recline adjustments, with close views of the controls.

Seat-depth slide — BIRCH detail — Forward / back 60 mm

The mechanism, in motion

Adjust your BIRCH.Find your seated position.

See how the seat height, depth, and recline controls work.

Real function footage

Specifications

A quieter silhouette, with the mechanism intact.

General

Product: BIRCH Ergonomic Chair
Designer: ITO Design, Nuremberg
Colours: White · Grey · Black

Build

Frame: Die-cast aluminium outer, high-elasticity nylon inner
Surface: Korean Wintex® flocked mesh
Support: Linked dual-back for upper back, waist, and sacrum

Dimensions & adjustment

Back style: Mid-back
Seat: 505 mm wide · 435–495 mm adjustable depth
Seat height: Approx. 475–560 mm (18.70–22.04 in)
Maximum user weight: 300 lb (136 kg)
Recline: Three-position tilt lock with tension adjust, up to 130°

Assembly

About 3 minutes to assemble.

After unpacking, the four core assembly steps take about 3 minutes. Use the diagram and checklist below; allow additional time for fit adjustments.

Base: Press the casters into the five-star base.
Lift: Drop the gas cylinder into the centre socket.
Chair body: Lower the seat-and-back assembly onto the cylinder.
Final check: Sit down once to settle the fit, then adjust height and recline.

Rear view of the BIRCH dual-back structure

The design credit

Designed byITO Design, Nuremberg.

ITO Design brings the linked back support, compact mechanism, and home-office silhouette together in BIRCH.

A BIRCH chair in a light, wood-toned home workspace with oak storage and tall windows

Why we made it

Belongs in a home,not a cubicle.

Most ergonomic chairs were designed for offices, then sold to apartments. We bring home the work of the studios behind the world's most enduring seating — a chair you'd keep in the room you love most, not one you hide when guests arrive.

Your home, finally at rest.

BIRCH Ergonomic Chair

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Certification & proof

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Assemble your BIRCH in about 3 minutes.