
Dimensions:
- Overall: 25.75 in W x 25 in D x 35.6 - 40.75 in H
- Seat: 20.8 in W x 16.1 - 18.5 in D x 15.6 - 20.75 in H
- Base: 25 in Dia
- Backrest: 18.75 in W x 22.5 in H
- Armrest: 8.4 in D x 7.2 - 10.75 in H
- Distance Between Armrests: 18.75 in
Packaged Dimensions: 27 in W x 23 in D x 29.5 in H
Weight Capacity: up to 400 lbs.
Product Weight: 27 lbs.
Packaged Weight: 40 lbs.
Seat Fabric: 100% recycled polyester.
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Approval:
- Sustainable Brand
- Made in USA
- Light Assembly
- Warranty Included
Description
The World One Upholstered Task Chair from Humanscale redefines ergonomic seating with its innovative tri-panel mesh backrest and weight-sensitive recline mechanism. This refined evolution of Niels' celebrated World chair eliminates traditional adjustment mechanisms, instead harnessing physics and body weight to create intuitive support. The chair's adjustable armrests move in concert with your body, providing consistent comfort throughout your workday. A sophisticated blend of minimalist design and engineering excellence, World One delivers premium ergonomic benefits in a cost-effective solution.
Highlights
- Made in the United States
- Weight Compensation Recline utilizes the sitter’s weight to provide automatic and personalized support in any position without the need for adjusting knobs and levers
- Pivoting backrest automatically moves with the sitter, offering perfect lumbar support throughout different postures/positions
- Tri-panel back with Form Sensing Mesh™ technology provides tailor-made lumbar support that instantly adjusts to each sitter without knobs, levers, or button
- Comes in classic all-mesh design or with optional contoured foam seat. Foam seat is sculpted to reduce pressure points and provide exceptional weight distribution, supporting long-term comfort and improved circulation
- Fits 95% of the population: Height: 5’0” - 6’4” (152 cm - 193 cm); Weight: 100 lbs - 400 lbs (45.4 kg - 181.4 kg)
- Recline Range: 17° recline + 8° backrest tilt
- Sustainability Certification: SCS Indoor Advantage™ Gold, BIFMA LEVEL® 3, DECLARE® - LBC Red List Approved, Health Product Declaration (HPD)
- Some assembly required
- Niels Diffrient
Assembly Required
Mesh: To effectively clean your mesh textile, you must immediately remove the stain or dirt spot. To remove dirt and stains that result from everyday wear and tear, use a solution of mild soap, such as Ivory® liquid soap and water. Other options include Carbona Pet Stain Remover or Formula 409. Apply the solution over the soiled area and let it sit for approximately two minutes. Rub gently with a sponge or brush to remove the stain. Blot excess cleaner with a dry cloth and repeat at least once more to ensure total stain removal. For tougher stains, such as mustard or ketchup, use mild soap and water or Carbona Pet Stain Remover and apply the same system as stated above. Stains from certain substances, such as salad dressing, are a bit more difficult to remove because the oils within the substance penetrate the yarns of the mesh. Remove these stains quickly with soap and water or Formula 409 and rub gently with a sponge or brush to remove the stain. Blot excess cleaner with a dry cloth and repeat as needed.
Fabric: Vacuum clean frequently, ideally every week if fixed covers. Remove stains as soon as they occur, with clean warm water or sparkling water. Extraction clean when necessary. Extraction cleaning might dissolve water based glue. Pay attention to temperature and amount of leaning fluid.
Current selected SKU:
Other available SKUs: WL11B1J10AU77SH, WL11B1J10AU19SH
"Humanscale World One Upholstered Task Chair" (Stock ID 8173278363693)
As provided by Humanscale:
12 year warranty for parts and components.
5 year warranty for arm pads and textiles.
Have a question about this product? Need help finding something? Our expert Customer Service team is here to help. Give us a call at (888) 222-4410 or email us.

Dimensions:
- Overall: 25.75 in W x 25 in D x 35.6 - 40.75 in H
- Seat: 20.8 in W x 16.1 - 18.5 in D x 15.6 - 20.75 in H
- Base: 25 in Dia
- Backrest: 18.75 in W x 22.5 in H
- Armrest: 8.4 in D x 7.2 - 10.75 in H
- Distance Between Armrests: 18.75 in
Packaged Dimensions: 27 in W x 23 in D x 29.5 in H
Weight Capacity: up to 400 lbs.
Product Weight: 27 lbs.
Packaged Weight: 40 lbs.
Plastic, aluminum, steel, mesh.
Seat Fabric: 100% recycled polyester.
Shipping: Free
Ships via 2Modern Standard Delivery.
- Delivery: Standard shipping provides delivery to the front door of a residence or dock of a commercial building. The delivery team will transport the item(s) from the truck to the first available dry, protected area outside your home (front porch, garage, or similar).
- What's Included: Standard Delivery includes delivery to the front door. If the destination is a multi-unit building, the order may be delivered inside the entrance to the building, but not to specific apartment door. In some cases, a signature may be required. Please note: this option does not include inside delivery to room of choice, unpacking, assembly, or removal of packing debris. Please contact Customer Service at (888) 222-4410 if additional delivery options are needed.
To cancel an order, please notify us within 48 hours. We do not accept cancellations for made-to-order items after 48 hours. If an item has already shipped, customer will incur shipping charges which will be deducted from refund. For more information, please see Cancellation Policy.
Return Policy2Modern has a generous return policy accommodating product returns within 30 days on most items. Please note, we do not accept returns on made-to-order items. For more information, please see Return Policy.
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Contact our Humanscale specialist today via chat or (888) 222-4410.