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Trea Task Chair is made by Humanscale. We review every brand we carry against published evidence in six categories; Humanscale scores 5.0 out of 5 (30 of 30).
- Material 5 out of 5Up to 38% recycled; Planet Positive award 2022
- Transportation 5 out of 5Own plants in the US and Mexico, overland
- Manufacturing 5 out of 5TRUE Zero Waste plants; SEAL award 2022
- Labor 5 out of 5Certified B Corp since 2024
- Energy 5 out of 5Verified LCAs; 47% renewable power
- Durability 5 out of 515-year warranty; parts; BIFMA tested
Trea Task Chair
Est. 1983 · New York
Shipping: $72 flat · FREE on orders $1,500+
✓ 30-Day Returns · ✓ Warranty Included · Questions? Chat with a design specialist →

The maker · Est. 1983 · New York, USA
Humanscale
Ergonomic design from New York, since 1983
Robert King founded Humanscale in New York in 1983. It designs task chairs, sit-stand desks and lighting around minimal environmental impact, and it is one of the few companies with Living Product Certified designs.
- Living Product Certified designs
- 70+ patents
Trea Task Chair
Recline built into the shell itself: no knobs, no levers, twenty pounds you can carry one-handed.
Todd Bracher designed the Trea around a solid-state mechanism — a die-cast aluminum joint that flexes rather than pivoting — giving roughly 12 degrees of give as you lean back. A waterfall front edge takes pressure off the thighs through a long meeting. See the full range in our Humanscale collection.
Materials
Engineered polymers, tubular steel, die-cast aluminum, contoured seat cushion, upholstery textile
Dimensions
22 in. W × 28.5 in. D × 32 in. H; seat height 18.3 in.; seat depth 18.5 in.; 20 lbs
Designer
Todd Bracher
Weight capacity
300 lbs
Certifications
BIFMA LEVEL 3, SCS Indoor Advantage Gold, DECLARE Red List Free, Living Product Challenge, Health Product Declaration, CDPH
Warranty
5 years
Common Questions
Is there anything to adjust on the Trea?
No. The recline is solid-state, meaning the aluminum joint flexes under your weight instead of turning on a mechanism. There are no knobs or levers to set, which is why it suits shared meeting rooms.
How heavy is it to move?
Twenty pounds. That is light enough to carry in one hand between rooms, and it is part of why Humanscale positions the Trea as a multi-use chair rather than a fixed desk chair.
What does Living Product Challenge certification mean?
It is the International Living Future Institute's programme under which Humanscale audits products for climate, water, and energy performance — a stricter bar than emissions testing alone.
Shipping & Returns +
Country of Production +
United States
Dimensions +
Care Guide +
Humanscale Sustainability Meter
Reviewed for sustainability by Comosum: Humanscale scores 5.0 out of 5 (30 of 30) across six categories, from published evidence.
- MaterialUp to 38% recycled; Planet Positive award 20225 out of 5
- TransportationOwn plants in the US and Mexico, overland5 out of 5
- ManufacturingTRUE Zero Waste plants; SEAL award 20225 out of 5
- LaborCertified B Corp since 20245 out of 5
- EnergyVerified LCAs; 47% renewable power5 out of 5
- Durability15-year warranty; parts; BIFMA tested5 out of 5
grade out of 5
Shipping and Returns
Shop with confidence. Learn more about our shipping process, delivery estimates, and hassle-free return policy.
Shipping Info
Flat-rate shipping from $10 by order total — your exact rate is shown above, next to the price. Orders over $1,500 ship FREE, freight and duties included. White Glove delivery is available at checkout on orders over $1,000 — $250 up to $1,500, $150 above it.
Returns
30-day returns in unused, original condition. Start a return at hello@comosum.co — we'll coordinate it with you.
Warranty
Every piece carries its manufacturer's warranty — typically 2 years or longer. We handle all claims for you at hello@comosum.co.

















