Ergonofis and AllSeating present the Equation chair, an intuitive design that makes comfort effortless while enhancing your workspace with timeless beauty. Its weight-activated mechanism, proprietary back-adjustment system, integrated seat slider, and adjustable arms adapt intuitively to every user for personalized comfort. With smooth adjustments and seven tone-on-tone fabric and mesh options, it delivers the perfect balance of form, function, and visual harmony in any workspace.
Details
Weight-activated mechanism adapts to your body to find ideal sitting position
Buttons on back frame allows you to adapt the backrest to fit your posture
Integrated seat slider
Ergonomic and height adjustable arms
Dual surface casters (for carpet or hardwood floors)
Optional dual pivoting arms that rotate at the arm joint (20° in / out) and the arm cap (20° in / out)
Weight Limit: 350lbs
In partnership with AllSeating, we created the Equation Chair—an intuitive design that makes comfort effortless while enhancing your workspace with timeless beauty.
We accept returns for chairs and accessories that are sent back to us in perfect condition (not used) and in their original packaging (or its equivalent) 30 days after the ship date.
Equation’s proprietary back support system provides maximum comfort with minimal adjustments. The chair offers three precise backrest angles—103.5° (neutral), 105.25° (position 1), and 106.25° (position 2)— easily adjustable through the discreet buttons on the lower back frame. Dial the backrest recline and the seat depth for the perfect sitting posture.
Weight-Activated Mechanism
The weight-activated tilt mechanism automatically adjusts to your body weight, delivering a smooth, personalized recline without manual tension knobs. It intuitively adapts to each user’s torque requirements, ensuring effortless comfort throughout the day.
Integrated Seat Slider
An integrated seat slider enables easy, fluid seat-depth adjustment, helping you find optimal leg and lower-back support with just a simple motion.
Adjustable Arms
Comes standard with height-adjustable arms for adaptable upper-body support. For enhanced flexibility, optional dual pivoting arms allow for additional width and angle adjustments—perfect for users who need more dynamic arm positioning throughout the day.
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Options
Dual Pivoting Arms
The Equation comes standard with height-adjustable arms for adaptable upper-body support. For enhanced flexibility, optional dual pivoting arms allow for additional width and angle adjustments—perfect for users who need more dynamic arm positioning throughout the day.
Compare Our Ergonomic Chairs
Compare our ergonomic chair options at a glance—four styles, four comfort profiles.
• Lumbar support with tension adjustment
• Height adjustable arms
• Back inclination with lockable feature
• Dual surface casters
• Lumbar support with tension adjustment
• Integrated seat slider
• Height adjustable arms
• Back inclination with lockable feature
• Hard surface casters
• Rotating active seating
• Dome base with gripping surface
• Can be angled up to 10 degrees
• Triangular seat
Frame Color
Ash or Black
Ash or Black
Ash or Black
White or Black
Mesh & Seat Colors
7 tone-on-tone options
22 color combos
22 color combos
Same as frame
Material
• Elastomeric back mesh
• Soft or weaved fabric seat
• Elastomeric back mesh
• Weaved fabric or leather seat
• Elastomeric back mesh
• Weaved fabric or leather seat
• Weaved fabric seat
Available Options
• Dual pivoting arms
• Seat slider
• Adjustable back height
• Adjustable back height
None
Adapted For
All heights
5'4" and higher
5'4" and under
All heights
Weight Limit
350lbs
325lbs
325lbs
265lbs
Warranty
12-year warranty
12-year warranty
12-year warranty
5-year warranty
Free Shipping Over $150+
Assembly Service Available
Easy Returns & Exchanges
12-Year Warranty
Frequently Asked Questions
Is The Equation Ergonomic Chair Hard To Install?
No, it’s very easy and simple. Each chair comes with an installation guide and it should take you less than 10 minutes to assemble. The chair arrives in 4 pieces; the base, the gas cylinder, the seat, and the back support. The assembly is simply to slide the gas cylinder in the base, then to attach the back to the seat by using 4 screws.
Are The Arms Of The Equation Chair Adjustable In Width?
The regular arms of the Equation Chair are only adjustable in height.
However, we do offer the Dual Pivoting Arms option that allows to move the armrests freely (front, back, diagonal on each side).
What Is The Weight Limit Of The Equation Chair?
The Equation Chair can hold up to 365 pounds.
What's The Difference Between The YouToo & Equation Chairs?
The Equation Chair features a weight-activated mechanism that automatically responds to your body weight to help you find an ideal sitting position. It also includes an integrated seat slider, height-adjustable armrests, dual-surface casters (for carpet or hardwood), and controls on the back frame that let you adjust the backrest.
The YouToo Chair includes height-adjustable armrests, hard-surface casters, a reclining backrest with a lockable tilt feature, and an ergonomic lumbar support with tension adjustment. A seat slider is available as an optional add-on.
