Minimal form. Maximum versatility. Trea delivers lightweight, refined seating designed for dynamic, shared spaces.

Design Features

  • Supportive shell shape

    Supportive shell shape

    Curved design follows the body to support the lumbar and distribute pressure evenly.
  • Height adjustable

    Height adjustable

    Designed to suit a range of work surfaces and seating preferences.
  • Armless design

    Armless design

    Keeps the chair clean, lightweight, and easy to move between spaces.
  • 360° swivel

    360° swivel

    Allows easy movement and flexibility while seated.
  • 12° recline

    12° recline

    Provides supported movement without levers or adjustment knobs.

Specifications

Variant

SKU

T400WWWHE11XSNC

Warranty

15 Years; Fabric/Cushions/Casters: 5 Years

Dimensions

Width

22 in

Depth

27.55 in

Overall Height

31.7 in - 36.61 in

Backrest Height

15.75 in.

Seat Depth

18.5 in - 18.5 in

Seat Height

31.7 in - 36.61 in

Weight

Overall Weight

20.5 lb


Materials & Sustainability

  • Product Materials

    Trea is constructed using engineered polymers, tubular steel, die-cast aluminum, contoured seat cushion, and upholstery textile. Engineered polymers form the seat shell and primary structure, selected for flexibility and impact resistance. The base is constructed from tubular steel or aluminum depending on configuration. Die-cast aluminum is used for the solid-state recline mechanism.


Who It's For

For people who want simple, modern seating that still feels supportive.

  • Ideal for light task work and shorter desk sessions
  • Great for shared spaces, studios, and flexible work areas
  • A strong fit for modern interiors that want a clean chair that works anywhere

Certifications & Testing

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

Care, Maintenance & Longevity

  • Upholstery

    Care instructions vary depending on the selected upholstery. Vacuum regularly using a soft brush attachment to remove dust and prevent dirt from working into the fibers. For spills, act quickly — blot liquids with an absorbent cloth before they set. Stains should be removed by gently dabbing with a lint-free cloth or sponge dampened with clean, warm water. If necessary, add a small amount of mild dish soap, then finish by dabbing with clean water. Avoid rubbing, as this may damage the textile surface. For wool textiles, professional dry cleaning is recommended for anything beyond surface stains. For detailed care instructions by upholstery type, refer to the Humanscale Care Guide.

  • Frame, Base & Components

    Clean metal and plastic components with a soft, damp cloth and mild soap if needed. Dry thoroughly.

The futuristic form language of the Trea multipurpose chair is complemented by sophisticated ergonomics

Portrait of Todd Bracher with glasses and short hair on a light gray background

Designed By Todd Bracher

Todd Bracher is an industrial designer, strategic advisor, and author whose practice spans disciplines, industries, and cultures. Over a 25-year career, he has brought more than 200 products to market for leading global brands including Herman Miller, Humanscale, Georg Jensen, Fritz Hansen, Issey Miyake, and 3M—earning recognition as a three-time International Designer of the Year. Bracher is the founder of Design in Context, a methodology built on the principle that form follows function, function follows context. By placing business objectives, human needs, and contemporary culture at the center of the design process, the framework produces solutions that are quietly effective, deeply considered, and built to endure. After a decade working across Copenhagen, Milan, Paris, and London, Bracher returned to his native New York, where he is based in Brooklyn.
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4.6
Rated 4.6 out of 5 stars
Based on 5 reviews
Total 5 star reviews: 4 Total 4 star reviews: 0 Total 3 star reviews: 1 Total 2 star reviews: 0 Total 1 star reviews: 0
5 reviews
  • Chloe B.
    Verified Buyer
    Rated 5 out of 5 stars
    Height works perfectly with my desk

    Height works perfectly with my desk. The back support is firm but comfortable, and I can lean back without feeling unstable. I think this is great if you don't want one of those giant gamer type chairs towering behind your desk.

  • Carlos F.
    Verified Buyer
    Rated 5 out of 5 stars
    When it arrived it

    When it arrived it was really easy to put together and also quite similar to the photos in terms of the product, appreciate the care with delivery

  • Rahul C.
    Verified Buyer
    Rated 5 out of 5 stars
    Bought for my home office

    Bought for my home office. The seat is soft enough to stay comfortable all day and the backrest supports in all the right places.

  • Tyler M.
    Verified Buyer
    Rated 5 out of 5 stars
    Modern chair

    Simple, modern chair. Supports me well while working long hours, feels premium for the price.

  • Natalie H.
    Verified Buyer
    Rated 3 out of 5 stars
    Price point?

    It's fine but really? That price point?