Close-up of the Trea Chair’s sculpted white base and polished aluminum frame, highlighting its modern ergonomic design.
Angled front studio view of the Trea Chair, showing clean lines and ergonomic structure on a white background.
Front view of the Trea Chair with subtle curvature, showcasing its symmetrical and ergonomic form.
Trea Chair in a modern residential-style office, surrounded by natural light and minimalist furnishings.
White Trea Chair set in a cozy interior nook, paired with neutral tones and indoor greenery.
Side view of the Trea Chair in white with a yellow seat, emphasizing its clean profile and contemporary silhouette.
Side profile of the Trea Chair highlighting the backrest angle and contoured seat for ergonomic support.
Detail of the Trea Chair’s purple upholstered seat, highlighting premium textile and subtle curvature.

Ergonomic Modern Office Chair

Trea Chair

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The Trea Chair by Humanscale is a sculptural seating solution that merges fluid design with intuitive performance. Designed by Todd Bracher, Trea features a patented automatic recline system that responds to the user’s weight and movement—offering continuous support and a naturally aligned posture without levers or manual adjustments.

With its curved silhouette and minimalist profile, Trea enhances any setting, from hybrid workspaces to elevated dining areas. Its compact footprint and timeless form make it ideal for multifunctional interiors where style and space must coexist.

Available with five base options and an optional upholstered seat pad in a wide range of custom materials, Trea integrates effortlessly with Resource Furniture’s modular desks, transforming tables, and media systems—bringing unity to dynamic spaces.

Planet Positive certified, Trea is engineered to deliver environmental benefit by contributing net-positive outcomes in energy, water, and carbon impact. Backed by a 15-year warranty, it is a lasting statement of refined utility, ergonomic well-being, and sustainable craftsmanship.

Overall Dimensions:
22'' W x 22.75'' D x 31.25'' H
56 cm W x 58 cm D x 79 cm H

Seat Height:
18.3'' H
46.5 cm H

Chair Weight:
Four-leg: 20 lbs / Four-star: 20.5 lbs / Cantilever: 21.75 lbs
9.1 kg / 9.3 kg / 9.9 kg

Weight Capacity:
Up to 300 lbs
136 kg

Recline Range:
12° recline

Stackable:
Not stackable

Shipping:
Shipping costs will be calculated based on location and site conditions and quoted by a Resource representative during the order confirmation process.

Installation:
Professional installation is required and is available within our local service areas at an additional charge. Outside of these areas, we can provide detailed installation instructions to your installer.

Refunds/Returns:
Once we have confirmed your order and site conditions, refunds or returns cannot be accepted. Each order is discussed prior to delivery to ensure it meets your expectations and space requirements.
Trea Chair Tearsheet

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