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

Design Features

  • Waterfall seat edge

    Waterfall seat edge

    Helps reduce pressure behind the knees for lasting comfort.
  • Versatile four-leg base

    Versatile four-leg base

    A clean, stable option ideal for home and multipurpose spaces.
  • Supportive shell design

    Supportive shell design

    Contoured backrest cradles the body’s pivot points.
  • Solid-state recline

    Solid-state recline

    Supports natural movement without knobs or levers.
  • Red Dot Award-winning design

    Red Dot Award-winning design

    Recognized for its blend of style and performance.

Specifications

Variant

SKU

T100WWWSF15XGNC

Warranty

5 Years

Dimensions

Width

22 in

Depth

28.5 in

Overall Height

32 in - 32 in

Backrest Height

15.75 in.

Seat Depth

18.5 in - 18.5 in

Seat Height

32 in - 32 in

Weight

Overall Weight

20 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 a minimalist design with real ergonomic comfort.

  • Ideal for home offices and dining-style work setups
  • Great for flexible seating in studios, creative spaces, and guest areas
  • A strong fit for design-led interiors that need clean lines and everyday comfort

Certifications & Testing

  • HPD
  • DECLARE® - Red List Free
  • 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.
View Design Story
4.7
Rated 4.7 out of 5 stars
Based on 6 reviews
Total 5 star reviews: 4 Total 4 star reviews: 2 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
6 reviews
  • Alyssa J.
    Verified Buyer
    Rated 4 out of 5 stars
    Comfortable and sturdy

    Comfortable and sturdy. The seat is firm but not harsh. Rolling around is easy and it doesn’t wobble.

  • Logan C.
    Verified Buyer
    Rated 5 out of 5 stars
    Home office finally feels complete

    My home office finally feels complete. The wheels glide effortlessly and the backrest supports me perfectly even after hours of work. I keep leaning back just to feel the stretch.

  • Natalie P.
    Verified Buyer
    Rated 5 out of 5 stars
    Feels like it was made for me

    Feels like it was made for me. The recline adjusts naturally and my lower back has never felt better. I like the way it rolls over the hardwood without leaving a mark.

  • Grace T.
    Verified Buyer
    Rated 5 out of 5 stars
    Looks super sleek

    Looks super sleek, but not to cold as office chairs sometimes feel! Great in the office or other settings

  • Yuna W.
    Verified Buyer
    Rated 5 out of 5 stars
    Sleek design and very

    Sleek design and very functional. I feel supported in all the right places and it doesn’t feel stiff.