Designed by Niels Diffrient

World Task Chair with Mesh Backrest

Minimal design. Full performance. World uses a lightweight design and weight-sensitive recline to deliver effortless, self-adjusting support with less material.

Design Features

  • Adaptive backrest support

    Adaptive backrest support

    Breathable mesh backrest flexes with the sitter to provide natural lumbar support.
  • Weight-sensitive recline

    Weight-sensitive recline

    Uses body weight to deliver smooth, balanced recline without manual adjustments.
  • Backrest moves with you

    Backrest moves with you

    Maintains consistent support as you shift positions throughout the day.
  • Breathable mesh comfort

    Breathable mesh comfort

    Promotes airflow to help regulate temperature during extended work sessions.
  • Armrests move with the sitter

    Armrests move with the sitter

    Attached to the backrest to maintain ergonomic alignment as you recline.
  • Designed for durability

    Designed for durability

    Minimal mechanisms reduce wear while maintaining reliable performance.

Specifications

Variant

SKU

W11BN10N10SSNSC

Seat Textile Type

Mesh

Seat Textile Style

Catena

Seat Textile Code

Black

Back Textile Type

Mesh

Arm Style

Adjustable Height Arms

Frame Color

Black

Casters

Multi-Surface Caster for Hard or Soft Floor

Warranty

15 Years; Fabric/Cushions/Arm Pads/Casters: 5 Years

Dimensions

Width

654 mm

Depth

635 mm

Overall Height

904 mm - 1035 mm

Backrest Height

22.5 in.

Seat Depth

399 mm - 464 mm

Seat Height

396 mm - 527 mm

Weight

Overall Weight

11.8 kg

Weight Capacity

181.4 kg

Materials & Sustainability

  • Product Materials

    World is constructed using engineered polymers, multi-layer Duron arm pads, and Form Sensing tri-panel mesh. Engineered polymers form the primary structure, selected for their strength-to-weight ratio and impact resistance.

Who It's For

For
people who want breathable ergonomic comfort throughout the workday.
- Ideal for remote and hybrid workers who spend long hours at a desk.
- Great for home offices and professional workspaces where airflow and lightweight
support matter.
- A strong fit for people who want ergonomic performance without
complicated adjustments.

Certifications & Testing
  • HPD
  • DECLARE® - Red List Approved
  • Living Product Challenge
  • CDPH
  • BIFMA LEVEL® - Level 3
  • SCS Indoor Advantage Gold
  • Green Tick
  • MID

Care, Maintenance & Longevity

  • Upholstery

    Vacuum regularly using a soft brush attachment. For deeper cleaning, wipe down with a damp cloth — no soap required for routine maintenance. For stubborn marks, a small amount of mild soap solution can be applied and wiped clean with a damp cloth. Allow to dry fully before use.

  • Frame, Base & Components

    Clean metal and plastic components with a soft, damp cloth and mild soap if needed. Dry thoroughly.

Felt like the chair was protecting us from some of the more insidious side effects of sitting down.

Conforms to your back while weight-sensitive recline adjusts automatically - but barely noticeably - with each movement.

Blends an industrial minimalist design with a slew of feel-good features.

A perfect score for seat comfort and backrest comfort, and we were impressed to note that its 'tri-panel backrest' also provided exceptional lumber support.

A very comfortable chair.

The Humanscale Diffrient World chair has produced a seat that's brimming with effortless ergonomic comfort all contained in a sleek design that adds a touch of modernity to a workspace.

Niels Diffrient designing on board while sitting on Humanscale Freedom Saddle Stool ring base

Design By Niels Diffrient (1928–2013)

Niels Diffrient was a pioneering industrial designer known for his human-centered approach and belief that design should be intuitive and effortless. Often called “the last of the mid-century modernists,” he focused on simplicity, allowing form to follow function in its purest sense. A Cranbrook Academy graduate alongside Charles and Ray Eames and Eero Saarinen, Diffrient went on to shape some of the most iconic products of the 20th century. His work at Henry Dreyfuss Associates helped define modern industrial design, while his research into human factors redefined how products support the body. His partnership with Humanscale introduced a new standard in seating, creating designs that automatically adapt to the user. Diffrient’s legacy lives on in products that are simple, timeless, and designed to improve the human experience.
View Design Story
4.6
Rated 4.6 out of 5 stars
Based on 28 reviews
Total 5 star reviews: 20 Total 4 star reviews: 6 Total 3 star reviews: 2 Total 2 star reviews: 0 Total 1 star reviews: 0
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28 reviews
  • Enzo L.
    Verified Buyer
    Rated 5 out of 5 stars
    Pretty good chair

    Pretty good chair, reclines smoothly, but the seat pan is a bit firmer than I’d like. Still, I don’t regret getting it. Easy to move around and lightweight.

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  • Mei Z.
    Verified Buyer
    Rated 5 out of 5 stars
    Had a basic office

    I had a basic office chair before this and it was killing my posture. After switching to the World, I noticed my back feels supported all day. Lightweight but sturdy. Assembly was simple too, just had to snap the back onto the base.

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  • Layla B.
    Verified Buyer
    Rated 3 out of 5 stars
    Very comfortable and easy to use

    Very comfortable and easy to use. Only downside is the arm pads, they're not great quality for this price point

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  • Brandon A.
    Verified Buyer
    Rated 4 out of 5 stars
    I've been sitting in

    I’ve been sitting in this chair for a couple months now, and it really changed my workdays. I spend 8+ hours at my desk coding and my lower back hasn’t complained once. The mesh is breathable so I don’t get sweaty, and I love how it moves with me when I lean back. Super happy.

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  • Camila L.
    Verified Buyer
    Rated 5 out of 5 stars
    Perfect for my home office and looks clean

    Lightweight, sturdy, and very comfortable. Perfect for my home office and looks clean. Easy to reposition around my desk.

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