Diffrient World Chair by Humanscale

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Ships out March 21-27
Armrest Type : Armless
Frame Color : Grey
Back Mesh : Black Monofilament Stripe
Seat Color : Black Vellum
Casters or Glides : Hard Floor Casters
Humanscale Quickship
Ships out March 21-27

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Back Mesh | Black Monofilament Stripe
Seat Color | Black Vellum
Armrest Type | Armless
Casters or Glides | Hard Floor Casters +$11.00

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Diffrient World Chair by Humanscale
designed by Niels Diffrient

The world of furniture designers always faces a trade-off between simplicity and versatility when creating a new product. An ergonomic chair that is simple and intuitive usually sacrifices versatility and adjustability, while a highly versatile chair is rarely simple to use. In the Diffrient World Chair, ergonomics pioneer and renowned industrial designer Niels Diffrient has achieved an unprecedented combination of simplicity and versatility.

The World Chair has two manual adjustments- one for seat depth and one for seat height, but these aren't the only elements of the chair that adjust. All the other adjustments react automatically to your movements. Its patented form-sensing 3-panel mesh back conforms to your back, eliminating the need for the often intrusive external lumbar support. It also features a weight-sensitive recline mechanism that delivers support at every point of recline.

Diffrient World Chair Features1. Self-Adjusting Recline

  • Eliminates the need for recline locks and resistance knobs, creating a clean aesthetic
  • Regardless of the user's weight, the World Chair's recline mechanism delivers an appropriate amount of support and resistance during recline
  • User maintains a near-constant eye level while reclining

2. Pivoting Backrest

  • Extra backrest motion automatically adjusts to the movements of the spine
  • Adapts automatically to provide additional lumbar support as needed

3. Form-Sensing Mesh Technology

  • No external lumbar devices to adjust depending on your sitting position
  • Trip-panel, non-stretch mesh construction creates body fitting contours and self-adjusting lumbar support for automatic, customized fit
  • Low-abrasion mesh protects clothing
  • Can be replaced as needed if another user should the World Chair changes users

4. Form-Fitting Seat

  • Frameless front edge eliminates contact stress behind the knees
  • Adjustable seat depth in the World Chair accommodates a wide range of users
  • Low-abrasion mesh protects clothing

5. Armrests

  • Adjustable or fixed armrests connect to the backrest instead of the seat to stay with the body during recline
  • Optional height-adjustable armrests for custom arm support
  • Armless model also available

6. Body Fit

  • The Diffrient World Chair automatically customizes recline resistance and lumbar support for every user
  • Size-to-fit settings for seat height and seat depth

7. Casters

  • Standard casters for hard surfaces
  • Optional soft casters or glides

Materials & Measurements

Aluminum and plastic, made from 97 percent recycled content


  • Height: 36.5" - 41.5"
  • Width: 24"
  • Seat height: 16" - 21"
  • Seat depth: 16.5" - 20"
World Chair Dimensions Front
World Chair Dimensions Side

Environmental Information

The World Chair is made of 34 percent recycled content and is 97 percent recyclable.

About The Manufacturer

Humanscale LogoHumanscale's focus since its inception in 1982 has been providing outstanding ergonomic seating and accessories for the home and the office. Their products, which range from task chairs to keyboard trays to CPU holders, are all geared towards making life simpler, easier, and healthier for anyone who works at a desk. Widely recognized for their line of office seating, Humanscale has done much to advance design in some newer product areas- namely in computer and office accessories such as monitor arms, foot machines, and the ergonomic computer mouse. Winner of numerous design awards, Humanscale continues to deliver groundbreaking office tools that combine simplicity, aesthetics, and ergonomics.

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Niels DiffrientNiels Diffrient
Designer of the Freedom Chair, the Liberty Chair, and the Diffrient Light, Niels Diffrient is internationally recognized as a premier designer in the field of ergonomics. With a resume that includes collaboration with icons Eero Saarinen and Marco Zanuso, a background in aeronautical engineering, and numerous design awards, Niels Diffrient is undoubtedly one of the most influential designers of the past 50 years.

Born in 1928 in Star, Mississippi, Diffrient attended Wayne State University and eventually enrolled in the Cranbrook Academy of Art, where he won the First Medal of Design three times during his tenure there. After traveling and working in Europe thanks to a Fulbright Scholarship, Diffrient began work at the design firm Henry Dreyfuss Associates, where he would stay for 25 years. While there, he co-authored the three-volume publication Humanscale. This work summarized his design principles which were rooted in the belief that the human body should drive design for products that humans will interact with. In his own words: "A design should look good and be appealing, but without compromising human factors. Aesthetics should enhance the technical side, not deter from it."

    Awards and Honors:
  • 2002 Cooper Hewitt National Design Museum Product Design Award
  • 1996 Chrysler Award for Innovation
  • 2005 Legend Award from Contract Magazine
  • Named the "Granddaddy of the ergonomic revolution by Forbes Magazine in 2007
  • Honorary Royal Designer for Industry Member- awarded by the Royal Society of Arts and Industry
  • 1996 I.D. Magazine Top 40 Design Innovators


by PowerReviews
HumanscaleDiffrient World Chair

(based on 2 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



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  • 2 Stars



  • 1 Stars



Reviewed by 2 customers

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No regrets with this one.


from WA

Verified Buyer

Comments about Humanscale Diffrient World Chair:

I've been through quite a few chairs trying to find one that would work for long periods of time without hurting my lower back. This is the first keeper I've come across. If you have a need to be at a desk for an extended period of time and have trouble with your back (or if you just want a comfortable chair), I can highly recommend this model. I ordered mine with the mesh seat as well as the mesh back. It's very lightweight, yet you have the feeling it will hold up for a long time. A solid investment for anyone who sits for a significant amount of time.

Service and delivery comments:

Delivery was ahead of schedule and the chair was brought to my door in perfect condition.

(1 of 1 customers found this review helpful)


Diffrient Smart Chair


from Pasadena, CA

Verified Buyer

Comments about Humanscale Diffrient World Chair:

I am really pleased with the appearance of my Diffrient Smart Chair (Amber Stripe back and Hematite Lotus seat and arms). It was great having so many nice options to choose from when customizing my order.

I sit in it - as my main work chair - for about 5-6 hours a day. The back support is very comfortable. I do find though, after a couple of hours, the seat cushion seems a little too firm for me. It's a very expensive product and for the price, I guess I expected a little more comfort in the seat.

My chair has adjustable arms which I think is essential. My only regret is having selected "fabric" arms. I think I would have been happier with the Duron finish - the fabric seems a little "tacky" in feel. Also, the arms do no go quite high enough for my specific desk and so I had to raise the chair above what would be a normal height for me and then use a footrest. But this solution has worked out fine in the end.

When I sit in my old chair from Staples, I realize how superior the Smart Chair is. All in all, though not perfect, I think it's a very good product and I would recommend it. And it's so pretty!

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Shipping & Delivery

Free Shipping: Free

FREE Standard Ground Shipping
Standard ground shipping includes delivery by FedEx or UPS to your door or main lobby. Once shipped, items generally arrive within 2-5 business days. Simple, fast and easy service.

Product Q&A

Q: How much weight can it support?
A: The Diffrient World Chair is designed to support users up to 300 pounds

Q: Are there more colors available?
A: Yes, more colors, meshes, and upholsteries are available. Please call our sales team at 888-467-6278 for more information.

Product Q&A

Do you have questions about this product?

Get answers from real customers and in-house experts with AnswerBox.

1 Question | 1 Answer
Displaying question 1
  • Q:

    what are the glides for $17
    Asked on 12/2/2011 by Anonymous

    1 answer

    • Smart Furniture Staff Reviewer


      Glides are a fancy word for feet. If you don't want the chair on wheels (casters) select the glides so the chair will not roll around.

      Answered on 12/5/2011 by Melanie from Smart Furniture
Displaying question 1

Do you have a question about this product? 


The World Chair comes with a 15-year 24/7 warranty.