Designed by Niels Diffrient

Freedom Active Pony Lab Stool with Casters

Design Features

  • Lab-ready Lotus textile options

    Lab-ready Lotus textile options

    Water-repellent, easy to clean, naturally antimicrobial surface (PVC- and PFC-free).
  • Ergonomic saddle seat

    Ergonomic saddle seat

    Triangular cushion supports a more natural seated posture and promotes circulation.
  • Clean gas cylinder

    Clean gas cylinder

    Seals grease in the lower unit for cleaner, longer-lasting performance.
  • Built for demanding use

    Built for demanding use

    Durable construction designed for fast-paced lab and technical environments.
  • Active sitting design

    Active sitting design

    7-degree tilt encourages healthy movement to reduce fatigue during long shifts.
  • 360° swivel seat

    Supports flexible movement and quick task transitions.

Specifications

Variant

SKU

F540BK101FSSNSC

Seat Textile Type

Fabric

Seat Textile Style

Lotus

Seat Textile Code

Black

Back Textile Type

Fabric

Arm Style

Armless

Frame Color

Black

Casters

Multi-Surface Caster for Hard or Soft Floor

Warranty

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

Dimensions

Width

26.8 in

Depth

26.8 in

Overall Height

20.5 in - 24.91 in

Seat Height

20.5 in - 24.91 in

Cylinder Height

Desk Height

Weight

Weight Capacity

400 lb


Who It's For

For people who need ergonomic support in a stool that can keep up with hands-on, active work.

- Ideal for lab, clinical, and technical environments where mobility matters

- Great for standing-height benches and shared workstations

- A strong fit for long shifts where comfort and posture support are essential


Certifications & Testing

  • DECLARE® - Red List Approved
  • Living Product Challenge
  • CDPH
  • BIFMA LEVEL® - Level 3
  • SCS Indoor Advantage Gold
  • MID

Care, Maintenance & Longevity

  • Lotus Coated Performance Textile

    Routine cleaning: Wipe with a damp cloth using a mild soap and water solution. Allow to air dry. Disinfection: Compatible with a 10% bleach/water solution and 70% isopropyl alcohol. Apply with a clean, damp cloth. Do not saturate. Rinse with clean water and allow to air dry. Always follow your facility's approved cleaning and disinfection protocols.

  • Frame and base

    Can be wiped down with the same damp cloth and mild soap solution. Standard lab and healthcare cleaning agents are safe to use on all hard surfaces.

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.
View Design Story
5.0
Rated 5.0 out of 5 stars
Based on 4 reviews
Total 5 star reviews: 4 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
4 reviews
  • Yuna S.
    Verified Buyer
    Rated 5 out of 5 stars
    Feels much better

    Comfortable and supportive. I spend hours at my microscope, and my back feels much better than on my old chair. Easy to move around too.

  • Miguel R.
    Verified Buyer
    Rated 5 out of 5 stars
    Stool has made a

    This stool has made a huge difference in my work. The casters roll smoothly, and I can adjust the height quickly when switching between tasks.

  • Camila C.
    Verified Buyer
    Rated 5 out of 5 stars
    Solid construction and simple design

    Solid construction and simple design! Very happy with this purchase.

  • Claire B.
    Verified Buyer
    Rated 5 out of 5 stars
    Great build quality and sturdy

    Great build quality and sturdy, but the seat is a little firmer than I expected. Still better than any flat stool I’ve used.