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Sihoo C300 Pro Ergonomic Office Chair with Seat Depth for Long Sitting

4.8
Rated 4.8 out of 5 stars
95 Reviews
Sale price $379.99 Regular price $789.99

Color: Black
Version

Benefits

  • Supports up to 300 lbs
  • Dynamic lumbar support for all-day back comfort
  • Designed to fit users from 5' to 6'3"
  • Spacious cushion with adjustable seat depth
  • 6D adjustable armrests for versatile support
  • Easy adjustments with a single handle
  • Certified by BIFMA and SGS for quality and durability
  • Endorsed by The Gadgeteer, MMORPG, and loved by thousands of workers for ergonomic excellence

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!

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

sihoo doro c300 pro ergonomic office chair

I took the C300 Pro to work, where I sit for eight hours a day. It is way more comfortable than my basic office chair, and its high-tech look gets plenty of attention from everyone else in the office.

12 PR sihoo

Mitch Gassner

from mmorpg, Doro C300 Pro Ergonomic Chair Review

Adjustable seat depth for custom comfort

Adjustable seat depth for custom comfort

Doro C300 Pro’s expanded seat cushion provides a more spacious seating area for larger individuals, enhancing comfort. The adjustable seat depth allows for personalized positioning to suit your needs.

Adjustable anti-spine lumbar support

Adjustable anti-spine lumbar support

The BM (Body Movement) Tracking System ensures the lumbar support automatically conforms to your spine to keep your back comfortable and supported during different postures without the need for manual adjustment.

The mesh fabric provides plenty of support without all of the sweatiness of a leather gaming chair. All of the adjustability options of the C300 Pro allow you to comfortably sit for hours on end while you game away.

12 PR sihoo

Mitch Gassner

from mmorpg, Doro C300 Pro Ergonomic Chair Review

How C300 Pro Chair Helps?

  • Flexible seat back that contours to your back

    Flexible seat back that contours to your back

    When you move your upper body around or reach down to the side to pick up a pen you drop, the streamlined backrest with triangular frame flexes and matches your back, providing continuous support.

  • Full-back comfort for any size

    Full-back comfort for any size

    Easily adjust the headrest up and down, back and forth, or rotate it to fit the curve of your neck, giving you the perfect support and comfort. The wide surface also offers enough space to rest your head comfortably on the side.

  • Designed to elevateyour workspace

    Designed to elevateyour workspace

    Doro C300 Pro features a sleek, modern design inspired by ergonomic human spine. It’s comfortable to sit on and looks great, making it a perfect fit for your office, study, or home.

Specifications

  • Overview

    Designed to enhance your comfort, Sihoo Doro C300 Pro features automatic lumbar support and a spacious seat cushion for all-day ease. Enjoy flexible armrests and a customizable headrest that adapt to your every position, all wrapped in a sleek, modern design.

    Name: Doro C300 Pro Ergonomic Chair

    General Dimensions: 28"W x 28"D x 45"-51"H

    Product Weight: 55.34 lbs

    Assembly: Requires assembly

    Materials: ‎Mesh back and seat with soft PU coated armrests

    Maximum load: 300 lbs

    Warranty: (3) years warranty

  • sihoo doro c300 pro Specifications

    Chair back lifting height: 44.72" - 50.91"

    Seat depth: 16.81"-17.76"

    Max hip width: 20.28"

    Maximum load: 300 lbs

    Armrests: 6D coordinated armrests (up and down, left and right, front and back, inward and outward, with tilt-lock of armrests, and synchronized recline)

Doro C300 Pro Ergonomic Office Chair

@sihoo_usa

For every part of you

4.8
Rated 4.8 out of 5 stars
Based on 95 reviews
Total 5 star reviews: 73 Total 4 star reviews: 21 Total 3 star reviews: 1 Total 2 star reviews: 0 Total 1 star reviews: 0
99%would recommend this product
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95 reviews
  • S
    stnwerks
    I recommend this product
    Rated 5 out of 5 stars
    November 5, 2025
    lots of parts

    Pro's very comfortable chair, it is solid, and has a heavy base, very nice.

  • T
    Tomakin
    I recommend this product
    Rated 5 out of 5 stars
    October 31, 2025
    Easy to assemble comfortable modern chair

    Extremely well packaged and easy to assemble on your own. The chair feels sturdy, supportive, and stylish. The mesh seat and back provide great airflow, and it’s very comfortable to sit in for long periods. Excellent value for the cost, definitely a solid ergonomic option.

  • NL
    Nick L.
    I recommend this product
    Rated 5 out of 5 stars
    October 30, 2025
    Great chair, good price

    Fantastic upgrade from my old office chair! The comfort level is amazing, I can sit for hours without feeling tired. The armrests are easy to adjust, and the chair feels sturdy and premium for the price. Highly recommend it for work or gaming.

  • T
    Tom
    I recommend this product
    Rated 5 out of 5 stars
    October 30, 2025
    Big, comfy, very heavy, made of breathable material

    This is a large and a very HEAVY chair. It was so heavy I had to secure the help of my young nephew to take it to the basement (where I reside about half of the year when it's hot and humid) and assemble it there. Now, point by point: the chair is large (a plus, I am not exactly slim, you get my drift), it is comfortable for me (a plus), it is made of a breathable material (a BIG plus), it did not sink under my weight (a plus for now, time will tell), it is super heavy (I am undecided whether it's a plus or a minus, nobody would dare to steal it). I have a wooden rocker chair with the leg support flap and swivel back I bought 15 years ago. I still enjoy taking a daytime nap in it. That chair is a lot lighter than the item under review here. So, it is mostly pluses. How long it will serve before it starts sinking remains to be seen.

  • IS
    iCheckout S.
    I recommend this product
    Rated 5 out of 5 stars
    October 24, 2025
    Longer Screen Time Results In Upgraded Seating

    With each passing season, my desk time has noticeably increased, creating a need for a superior seating solution, and I'm thrilled to have located this computer chair.This chair is one of the most ergonomic and adjustable options available, providing great comfort for long hours of sitting.It’s easy to adjust to fit your body perfectly so you won’t feel sore or achy after use. You can customize the armrests and seat height for comfort, ensuring good posture.In summary, the chair's construction is excellent, and it provides superb support, which I greatly appreciate, given my long hours spent working at my desk.