Designed by Niels Diffrient

World Task Stool with Mesh Backrest

Minimal design. Full performance, elevated. World Stool combines lightweight materials with weight-sensitive recline for simple, adaptable support.

Design Features

  • Tri-panel mesh backrest

    Tri-panel mesh backrest

    Flexes to follow the sitter’s back while providing natural lumbar support.
  • Weight-sensitive recline

    Weight-sensitive recline

    Provides smooth movement without knobs or levers.
  • Backrest moves with you

    Backrest moves with you

    Maintains consistent support across different postures.
  • Breathable mesh comfort

    Breathable mesh comfort

    Promotes airflow during extended work sessions.
  • Armrests move with the sitter

    Armrests move with the sitter

    Attached to the backrest for consistent ergonomic positioning.
  • Designed for durability

    Designed for durability

    Built to perform long-term with minimal mechanisms.

Specifications

Variant

SKU

W31WN01N01WSNSC

Seat Textile Type

Mesh

Seat Textile Style

Pinstripe

Seat Textile Code

White

Back Textile Type

Mesh

Arm Style

Adjustable Height Arms

Frame Color

White

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

968 mm - 1158 mm

Backrest Height

22.5 in.

Seat Depth

399 mm - 464 mm

Seat Height

460 mm - 650 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 need ergonomic comfort at elevated workstations.
- Ideal for standing desks and sit-stand work environments
- Great for counters, collaborative tables, and higher work surfaces
- A strong fit for professionals who want breathable ergonomic support
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.
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