The Freedom 25 Signature Edition marks 25 years of Niels Diffrient's most iconic design. Where other chairs demanded adjustment, Freedom adapted itself, replacing knobs and levers with a gravity-based recline that responds to the sitter's own body weight. Refined for this edition with an upholstered back, polished aluminum components, and a choice of premium textile or leather.

Design Features

  • The Innovation That Changed Everything

    The Innovation That Changed Everything

    Niels Diffrient replaced the locks, knobs and springs that are under older generation chairs with your body weight and the laws of physics so you can move effortlessly from one position to another, making it feel as if the chair were custom-made for you or whoever happens to be sitting in it at any given moment.
  • Upholstered Back

    Upholstered Back

    A fully upholstered back panel exclusive to the Signature Edition, adding softness and a refined finish.
  • Upgraded Trim

    Upgraded Trim

    Polished aluminum hardware throughout, with each chair bearing Niels Diffrient's personal signature.
  • Synchronous Arms

    Synchronous Arms

    Our innovative synchronous arms, designed to allow you to effortlessly change your arm support with one hand.
  • Dynamic Headrest

    Dynamic Headrest

    Freedom Headrest dynamically supports the head and neck as users recline. It moves with the sitter for seamless comfort in any position, no manual adjustments needed.

Specifications

Variant

SKU

FR25EL18

Seat Textile Type

Fabric

Seat Textile Style

Elle

Seat Textile Code

0180

Warranty

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

Dimensions

Width

679 mm

Overall Height

879 mm - 1061 mm

Backrest Height

18 in. - 20.9 in.

Seat Depth

442 mm - 504 mm

Seat Height

410 mm - 514 mm

Weight

Weight Capacity

181.4 kg


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

    Care instructions vary depending on the selected upholstery. Vacuum regularly using a soft brush attachment to remove dust and prevent dirt from working into the fibers. For spills, act quickly — blot liquids with an absorbent cloth before they set. Stains should be removed by gently dabbing with a lint-free cloth or sponge dampened with clean, warm water. If necessary, add a small amount of mild dish soap, then finish by dabbing with clean water. Avoid rubbing, as this may damage the textile surface. For wool textiles, professional dry cleaning is recommended for anything beyond surface stains. For detailed care instructions by upholstery type, refer to the Humanscale Care Guide.

  • Frame, Base & Components

    Clean metal and plastic components with a soft, damp cloth and mild soap if needed. Dry thoroughly.

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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