Designed by Niels Diffrient

World LM Task Chair

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

Specifications

Variant

SKU

WL11B1J10J10SS

Seat Textile Type

Mesh

Seat Textile Style

Catena

Seat Textile Code

Black

Back Textile Type

Mesh

Arm Style

Adjustable Duron Arms

Frame Color

Black

Casters

Multi-Surface Caster for Hard or Soft Floor

Warranty

12 Years; Fabric/Cushions/Arm Pads/Casters/Wood: 5 Years

Dimensions

Width

25.75 in

Depth

25 in

Overall Height

35.6 in - 40.75 in

Backrest Height

22.5 in.

Seat Height

15.6 in - 20.7 in

Weight

Overall Weight

27 lb

Weight Capacity

400 lb


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 ergonomic comfort without a complicated chair.

- Ideal for hybrid and work-from-home setups

- Great for smaller home offices where clean design matters

- A strong fit for anyone who wants a streamlined ergonomic chair that still feels premium


Certifications & Testing

  • 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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