Diffrient World chair

Eight major parts, two manual controls, one comfortable you. The latest creation from Niels Diffrient combines unmatched functionality and sustainability in the simplest design ever conceived for a high-performance task chair.

The Diffrient World chair offers the same level of dynamic support provided by automatic recline mechanisms, but does so whilst eliminating the mechanism altogether.

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Self-adjusting recline

Revolutionary mechanism-free design harnesses the laws of physics and the user's body weight. Automatically provides appropriate support and resistance regardless of user's size. No unnecessary recline locks or tension springs to set or adjust. User maintains near-constant eye level during recline.

Pivoting Backrest

Extra motion of the backrest during recline automatically adjusts to the changing needs of the spine. Provides additional lumbar support as needed.

Form-sensing mesh

Tri-panel, non-stretch mesh construction creates body- fitting contours and self-adjusting lumbar support for an automatic, customized fit. No external lumbar devices to adjust, break or lose. Low-abrasion mesh protects clothing.

Mesh Seat

Frameless front edge eliminates contact stress behind the knee. Low-abrasion mesh protects clothing. Optional upholstered seat.


Adjustable or fixed armrests connect to the backrest instead of the seat to stay with the body during recline. Armless model also available.

Body Fit

Size-adjustable to fit widest range of body sizes. Automatically customizes recline resistance and lumbar support for every user. Size-to-fit settings for seat height and seat depth. Optional height-adjustable armrests for custom arm support.


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


The Diffrient is a great example of
Humanscale's environmental mission.

  • Designed for users up to 136kg
  • Total number of parts: 80 (including fasteners)
  • Weight: 11.3kg
  • CAL 133-approved
  • 97% recyclable content
  • 34% recycled content
  • May contribute to a number of LEED-CI, -NC and -EB credits
  • 15-year 24/7 warranty
  • Greenguard Certification pending
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