Humanscale Trea Chair

The Humanscale Trea Chair improves your office's style and comfort exponentially (shown with four leg frame)
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The Humanscale Trea is a guest chair that will make your visitors feel at home instantly. From its solid state reclining mechanism to its contoured backrest, the Trea embodies Humanscale's core philosophy: your chair should work to fit you.

Created by the acclaimed designer Todd Bracher, this Red Dot-Award winning side chair features tons of design and color choices, a state-of-the-art seat back mechanism for ergonomic perfection, and an attractive look that just can't be beat. At home both in the office and in the living room, the Trea blends in seamlessly with contemporary design, and offers guests a seating option they will actively want to take you up on.


  • Unique, pivoting backrest contours to your body
  • Waterfall edge provides molded support to your legs
  • 3 base styles to match side chair to your own office design
  • Optional seat pad for added comfort

The Design Story

Designer Todd Bracher, while creating the Trea, a unique multipurpose chair, studied how nature had resolved the issue of integrated articulation. His inspiration was a lobster shell: observing how the exoskeleton moves in harmony with the organism, while protecting it. Using the concept of nature's design, that inspiration became a chair which responds to the our natural desire to move and recline, and the Trea does this. Without knobs, dials, or levers. The result is a "solid state" recline mechanism which adapts intuitively to everyone.

"I wanted to design a multipurpose chair with a visual simplicity and unique recline mechanism that would allow it to be used anywhere and by anyone."

Todd Bracher, Designer


Chair Weight Four-leg base: 20 lbs
Cantilever base: 21.75 lbs
Four-star base: 20.5 lbs
Backrest Tilt 12 degrees
User Weight 100 - 300 lbs
User Height 5'0" - 6'4"
Warranty 15 years, with 5 years on fabric, cushions, and arm pads


The Humanscale Trea Guest Chair is customizable with three different base styles: four legs, cantilever, or a four-star base. Each unique base style brings a different aesthetic to the beautiful lines of the Trea Chair.

Four Legs Standard design with each leg gradually sloping out from underneath the seat
Cantilever Continuous, c-shaped legs provide a gentle rocking motion when seated
Four Star Four legs jetting out from a single point make for a striking aesthetic

Frame Color

Choose between a white powder coated finish or polished aluminum for the frame of your Humanscale Trea.


Backrest Shell Color

The Trea's backrest comes in a white shell color.

The curved backrest isn't just aesthetically pleasing, it was specifically designed to provide gentle lumbar support

The backrest of the Trea Chair is unique in that it provides 12 degrees of recline without using any knobs or levers. Simply lean back and recline in comfort and style.


Seat Shell Color

The curved shell of the Humanscale Trea comes in white. The soft coloring shows off the beautiful lines of the Trea created by designer Todd Bracher.

The gentle, waterfall edge of the seat minimizes the amount of pressure placed on the user's legs making the Trea Chair great for guest or conference room seating.


Seat Pad

The Humanscale Trea is comfortable with or without a padded seat. If you choose to add a padded seat, the seat cushion will cover the entire seat base. The seat cushion comes in a variety of different fabrics.

Vellum - Grade 1

Constructed from a blend of nylon, Cordura, and elastic yarn, this four-way stretch textile offers a pleasing texture, while providing the extreme durability required for long-term use.

Corde 4 - Grade 1

Corde 4 is high-performance nylon and polyurethane woven into a four-way stretch fabric. This fabric will move and stretch for unmatched comfort.

Sensuede - Grade 3

Sensuede was developed to be the best and most luxurious engineered suede available. The faux suede's soft touch comes from the use of breathable and wrinkle resistant recycled microfibers that are finer than a human hair but are extra-strong, resulting in a very resilient fabric. This material also was selected because of its environmentally sensitive content and manufacturing process.

Bizon Leather - Grade 1

Bizon is a durable, water-resistant leather suitable for a wide range of applications. The combination of a special retannage and technically-advanced finishing process results in a leather that is not only water-resistant but also practical for applications that require a durable finish.



The Humanscale Trea comes standard with glides for a stationary guest chair. For added mobility, upgrade to hard casters, soft casters, hard braking casters or soft braking casters.

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This product comes standard with a Limited 15-year warranty.

Return Information

  • You are responsible for obtaining a Return Merchandise Authorization, the cost of shipping, and potential restocking fees, if the item has been opened.
  • To start a return, or to view the full returns policy, click here.
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