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Ergonomic chair

SitOne office chair

4.7

4.7

out of 5

Based on ratings

What our customers say

Customers highlight SitOne’s ergonomic design, adjustable features, and lasting comfort. It’s see...

Show more
Show less

5 stars

75.8%

4 stars

23%

3 stars

0.6%

2 stars

0%

1 star

0.6%

See all reviews

An ergonomically designed chair built for all-day comfort. Multip...
le adjustment points support your body’s natural posture, helping reduce strain and improve comfort. Every part of this ergonomic office chair is built to support long workdays, including seat depth adjustment, 4D armrests, and lumbar support. Its premium features and quality make SitOne a valuable investment in your comfort and long-lasting well-being. Easy to assemble. All required tools are included.
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  • Free shipping

  • |
  • 30-day trial

  • |
  • 3-year warranty

$229
-34%
Regular price $349
Sale price
Unit price  per 
Sales tax calculated at checkout

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Color: Black

Classic:

Black Gray

Limited-edition:New

Olive green Midnight blue Muted pink
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Features and benefits

Designed to fit a wide range of users

SitOne is built to provide comfortable, reliable support across a wide range of body types — so you can sit with confidence all day. With a wide range of customizable adjustments, you can fine-tune your fit and stay supported from morning to night.

Generously wide and cushioned

SitOne’s contoured seat is designed to support you comfortably while evenly distributing pressure to help reduce strain on your legs.

Ergonomic design

Designed for comfortable, supportive seating that promotes good posture. It helps keep your body in a natural position, reducing muscle strain and supporting long-term comfort.

Lets your back breathe

The mesh back promotes airflow to help keep you cool and comfortable during long workdays.

Certified quality

The chair meets rigorous BIFMA standards for durability and safety. Made with durable materials, it’s designed for everyday use — and backed by an extended 3-year warranty.

Free shipping! Delivery:

6
6 points of adjustment

You're original. SitOne adapts to you.

  • Lumbar support adjustment
  • Height adjustment
  • Reclining function
  • Seat depth adjustment
  • Headrest angle and height adjustment
  • 4D armrest
  • 4D armrest
Eases pressure on your legs

The high-density foam seat is shaped to evenly distribute pressure, improving comfort and helping relieve body tension.

Pressure distribution
Minimal pressure High pressure Concentrated pressure
Aligns with your body
Aligns with your body

SitOne supports good posture and adapts to your body. This ergonomic design aims to align the spine, hips, and shoulders in their natural positions, reducing strain and discomfort.

Support for every body position

From Netflix to video calls, SitOne has your back.
  • From 98° to 135°

    Go from work to rest mode in a second.

  • 4 positions

    Lock the backrest in your preferred positions.

  • 300 lbs

    Maximum weight capacity.

Support for arms and shoulders

The 4D armrests support your forearms and shoulders while allowing a full range of motion that matches your natural arm position.

All-day comfort for your back

Lumbar support is a crucial feature that helps maintain good posture and reduces strain on your lower back by easing pressure on the lumbar area.

Designed for your body

The spacious seat and adjustable depth help you find a comfortable fit across a wide range of body types. The adjustable headrest supports your neck and head — including taller users.

SitOne assembly is easier than you think

0

Min

Average assembly time

Certified for durability

BIFMA certification confirms that SitOne has undergone hundreds of thousands of stress tests to meet safety, durability, and sustainability standards.

Drop load proof test

136kg weight (300lbs) dropped onto the center of the seat.

Seating durability test

100,000 cycles — a 125 lb weight falls onto the seat.

Backrest load test

A force of 1,001N is applied to the backrest for 1 minute.

Tilt mechanism test

300,000 cycles — the chair is tilted with a 240 lb weight on the center of the seat.

Forward overturning test

A vertical force of 600N is applied at points most likely to result in overturning.

Armrest durability test

60,000 cycles. A force of 400N is applied to each arm.

Rearward stability test

13 heavy discs are loaded against the backrest.

Swivel test

120,000 cycles — a 270 lb weight is applied on the seat at both its maximum and lowest height.

Drop load proof test

136kg weight (300lbs) dropped onto the center of the seat.

Seating durability test

100,000 cycles — a 125 lb weight falls onto the seat.

Backrest load test

A force of 1,001N is applied to the backrest for 1 minute.

Tilt mechanism test

300,000 cycles — the chair is tilted with a 240 lb weight on the center of the seat.

Forward overturning test

A vertical force of 600N is applied at points most likely to result in overturning.

Armrest durability test

60,000 cycles. A force of 400N is applied to each arm.

Rearward stability test

13 heavy discs are loaded against the backrest.

Swivel test

120,000 cycles — a 270 lb weight is applied on the seat at both its maximum and lowest height.

How do we compare?

You're probably wondering about your choices. So, we prepared this "fancy" table for you!

  • Price
  • Seat comfort
  • Size
  • Lumbar support
  • Adjustability
  • Armrests & headrests
  • Durability
  • Return policy
  • Customer support
  • Sit like a boss, spend like an intern
  • So cozy, you’ll think it’s your bed!
  • Adapts to you
  • We got your back, literally
  • Everything is adjustable
  • Your arms and neck will thank you
  • BIFMA, Prüfengel, TÜV certified
  • Free & no obligations
  • 5-star reviews are our obsession
4.8
  • Brands on Amazon

  • Saves your wallet, but not your back
  • Might as well sit on a rock
  • Too big? Too small? Too bad
  • Doesn’t exist
  • Bare minimum
  • Just for show
  • Squeaks at no extra charge
  • Try it. Should be interesting…
  • A test of patience and comprehension
  • Other brands

  • For this price, you could buy a throne
  • Comfort ends by lunch
  • One-size-fits-all. Try your luck
  • Starts out strong, but don’t count on it
  • Standard options
  • Does the job
  • Typical longevity
  • Expect some back-and-forth
  • Depends if the brand cares

Technical specifications

General Information

arrow

Assembly method

Self-assembly

Assembly level

Easy, no extra tools required

Average assembly time

25 minutes

Chair warranty

3-year

Free returns

30-day

Product features

arrow

Colors

Black, gray

Dimensions

45.5–49.2″ H × 26.6″ W × 23.6″ D

Max load capacity

300 lbs

Recommended height

Up to 6'1,5 ft

Seat fabric

Polyester

Frame construction

Nylon and glass fiber

Foam type

50-density molding foam

Lumbar support

In-built 4-way lumbar support system

Armrests

4-dimensional, full-metal mechanism, soft-coated top

Recline (tilt unlocked)

98° to 135°

Wheelbase

Nylon

Caster

Nylon

Product weight

40 lbs

See what our customers are saying

4.7
out of 5

Based on reviews

  • 5 stars
    75.8%
  • 4 stars
    23%
  • 3 stars
    0.6%
  • 2 stars
    0%
  • 1 star
    0.6%

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What our customers say

Customers highlight SitOne’s ergonomic design, adjustable features, and lasting comfort. It’s seen as an accessible entry to quality seating, with easy setup and a durable build. Fast support and a...

Show more
Show less

Customers highlight SitOne’s ergonomic design, adjustable features, and lasting comfort. It’s seen as an accessible entry to quality seating, with easy setup and a durable build. Fast support and an extended 3-year warranty make it a trusted choice.

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Your questions, answered.

Many office chairs are designed around a narrower fit range. SitOne is built to support a wider range of body types. SitOne is purpose-built to fit a wider range of body types, with nearly every component scaled up and designed to offer a broader range of adjustments.

Wipe the chair with a damp cloth to remove dust, dirt, and stains. Avoid harsh chemicals, and use mild soap and water for cleaning. To protect the mesh and foam over time, avoid prolonged direct sunlight.

The SitOne chair supports up to 300 lb to maintain performance, durability, and user safety. Exceeding this limit may affect the chair’s performance and long-term durability.

SitOne uses breathable elastic mesh that adapts to your body, offering supportive comfort across different sitting positions without needing to adjust the back height. The mesh balances support and airflow for a cool, breathable feel. The seat uses high-density foam to evenly distribute pressure and improve ergonomic seating comfort during long workdays.

The SitOne lumbar pillow provides effective support for the natural curve of your lower back.

Unlike many chairs that rely on rigid plastic lumbar inserts, SitOne features a soft, supportive lumbar pillow that adjusts easily up or down — so you can find the position that feels right for your back.

SitOne is covered by a 3-year limited warranty that protects against defects in materials and workmanship, giving you peace of mind with your purchase. Normal wear and tear and product misuse are not covered.