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Sihoo C300 Advanced Ergonomic Office Chair with Advanced Back Support

4.8
Rated 4.8 out of 5 stars
344 Reviews
Sale price $279.99 Regular price $319.99

Color: Black
Version

C300 - White Version is restocked!

Benefits

  • Supports up to 300 lbs
  • Environmentally certified by BIFMA and TUV for quality and safety
  • 4D adjustable armrests and multi-adjustable headrest for maximum comfort
  • Flexible backrest and self-adaptive lumbar support for consistent waist support
  • Streamlined seatback and waterfall-shaped seat for a lighter, ergonomic experience
  • Smart weight-sensing mechanism for effortless, balanced reclining
  • Endorsed by Tom's Guide, CNET, CNN, TechRadar, Forbes, and more than 1,000 reviews

Promises

  • 30-Day Free Returns.: Try the chair for 30 days. If it’s not for you, feel free to return it.
  • 3-Year Warranty: Enjoy lasting comfort and peace of mind with our 3-year warranty.
  • Fast Shipping: Receive your chair in just 5-7 days, in US and CA.
  • Satisfaction Guarantee: For any issues, contact support_us@sihoo.com for prompt assistance and guaranteed satisfaction.

Payment methods

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How to choose a right ergonomic office chair?

Check out our buying guide for you!

The lumbar support automatically adjusts as you lean back, which I found helpful, and the wheelbase is solid metal, not nylon, so there is less chance of it coming loose over time.

James Bricknell

James Bricknell

from CNET, best chairs of 2024

The netting material makes the chair comfortable on hot days, durable, and able to withstand extended use. And the upshot is a light and relatively compact seat, making it ideal for home office use.

Mark Sparrow

Mark Sparrow

from Forbes, affordable ergonomic chairs

The seat pan of the Doro C300 has a waterfall-shaped seat, which is designed to “offer a weightless seating experience”, closely resembles the one found on the much more expensive chair.

Anthony Spadafora

Anthony Spadafora

from Tom's Guide, C300 ergonomic chair review

1 of 3

"Relax and let inspiration flow—sit well and think better."

Sihoo Doro C300 Ergonomic Office Chair

How C300 Chair Helps?

  • sihoo doro c300 Ergonomic Design

    Ergonomic Design

    Design inspired by natural lines of human body, whether you prefer leaning forward or reclining while you work—it adapts effortlessly to your needs.

  • doro c300 Ergonomic Support

    Ergonomic Support

    The adjustable parts provides great support, and the eco-friendly, high-tech lightweight mesh keeps you cool and comfortable. It’s designed to fit your body naturally for all-day comfort.

    *Adjustable backrest fits all body types!

  • doro c300 Ergonomic Tech

    Ergonomic Tech

    Breathable waterfall cushion design reduces pressure on your thighs and hips, while the high-tech mechanism provides strong support for leaning back, ensuring you can sit comfortably all day long.

Specifications

  • Overview

    Doro C300 guarantees that the lumbar support adjusts itself to the contours of your spine, ensuring both comfort and support for your back in various positions, all without requiring any manual adjustments.

    Name: Doro-C300 Ergonomic Chair

    General Dimensions: 28"W x 28"D x 42"-49"H

    Product Weight: 65.58 lbs

    Assembly: Requires assembly

    Materials: Mesh back and seat, soft PU coated armrests

    Maximum load: 300 lbs

    Warranty: (3) years warranty

  • Sihoo Doro C300 Ergonomic Office Chair Specifications

    Chair back lifting height: 18.11" - 21.65"

    Seat depth: 17.13" - 18.11"

    Max hip width: 20.28"

    Maximum load: 300 lbs

    Armrests: 4D coordinated armrests (Up and down, left, right, forward and backward, tilt linkage)

Sihoo Doro C300 Office Chair

@sihoo_usa

For every part of you

4.8
Rated 4.8 out of 5 stars
Based on 344 reviews
Total 5 star reviews: 280 Total 4 star reviews: 59 Total 3 star reviews: 1 Total 2 star reviews: 1 Total 1 star reviews: 3
99%would recommend this product
Slide 1 selected
344 reviews
  • J
    James
    I recommend this product
    Rated 5 out of 5 stars
    October 13, 2025
    Great chair, comfortable and supportive

    I've been using the SIHOO Doro C300 for a few weeks now, and it's made a big difference in how comfortable I feel during long workdays. The lumbar support adjusts nicely with my back, and the armrests are soft and super adjustable.The chair feels sturdy and well-made, and it looks great in my home office. I’m tall, and it still fits me comfortably. Definitely recommend if you’re looking for a solid ergonomic chair.

  • K
    Kevin
    I recommend this product
    Rated 5 out of 5 stars
    October 11, 2025
    Most comfortable

    One of the best chairs I've gotten and in some ways better than my $900 customized chair! Very comfortable both for work and watching a movie

  • S
    Sturd
    I recommend this product
    Rated 5 out of 5 stars
    October 10, 2025
    Comfy and Durable even for extended use.

    Im a youtuber as well as streamer and this chair sees a lot of action. Its very comfortable and durable in the almost year that ive had it it hasnt worn out or had any issues, and I sit in it minimum of 8 hours a day. Very much recommend this chair for this cheap price

  • DM
    David M.
    I recommend this product
    Rated 5 out of 5 stars
    October 9, 2025
    Easy to install and ultra confortable

    It took me 45min alone to install, had no issue or even had to doubt anything during the process.The cushion is an upgrade to my last chair and the back rest was out of the box perfect for my back.I normally hate having a headrest but that one is really good and can move it so easily to be perfect based on the situation.

  • S
    SFC
    I recommend this product
    Rated 5 out of 5 stars
    October 8, 2025
    Excellent Office Chair and the price is Great

    It is suitable for people like me who sit in front of the computer for a long time. The headrest and lumbar support are both adjustable, and you can fine-tune the position according to your height and sitting posture. It really provides support without oppression, and you won't get tired easily after sitting for a long time. The tilt function is very smooth, and it is very comfortable to lean back when you are tired from work. The overall rotation and lifting of the chair are also very smooth and there is no jamming. The appearance is simple and practical, and the black color is versatile, which is suitable for home or office. The installation instructions are clear.