Designed by Niels Diffrient
World Task Stool
Minimal design. Full performance, elevated. World Stool combines lightweight materials with weight-sensitive recline for simple, adaptable support.
Design Features
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Tri-panel mesh backrest
Shapes to the sitter for automatic lumbar support. -
Designed for durability
Built to perform long-term with minimal mechanisms. -
Backrest moves with you
Maintains consistent support across postures.
Specifications
Variant
SKU
W30BN10AR13WSNSC
Casters
Multi-Surface Caster for Hard or Soft Floor
Warranty
15 Years; Fabric/Cushions/Arm Pads/Casters: 5 Years
Dimensions
Width
25.75 in
Depth
25 in
Overall Height
38.1 in - 45.6 in
Backrest Height
22.5 in.
Seat Depth
16.1 in - 18.5 in
Seat Height
18.1 in - 25.6 in
Weight
Overall Weight
26 lb
Weight Capacity
400 lb
Materials & Sustainability
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Product Materials
World is constructed using die-cast aluminum, steel, engineered polymers, contoured seat cushion, multi-layer Duron arm pads, and upholstery textile. Die-cast aluminum and steel form the structural frame and recline mechanism. Engineered polymers are used for components requiring flexibility and impact resistance. The back features patented Form Sensing tri-panel mesh that takes on the exact shape of the sitter's back, providing a personalized fit and maximum adaptability.
Who It's For
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
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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.
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Frame, Base & Components
Clean metal and plastic components with a soft, damp cloth and mild soap if needed. Dry thoroughly.
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