C300 Pro in Black is in stock! Check out now!

30-Day Free Returns & 3-Year Warranty

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

4.7
Rated 4.7 out of 5 stars
72 Reviews
Sale price $389.99 Regular price $429.99

Color: White
Version

C300 Pro is restocked!

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

  • American Express
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Your payment information is processed securely and the price includes regional tax.

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

4.7
Rated 4.7 out of 5 stars
Based on 72 reviews
Total 5 star reviews: 52 Total 4 star reviews: 19 Total 3 star reviews: 1 Total 2 star reviews: 0 Total 1 star reviews: 0
99%would recommend this product
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72 reviews
  • S
    sarah.m.
    I recommend this product
    Rated 5 out of 5 stars
    September 26, 2025
    Comfortable and Supportive

    This chair was fairly easy to assemble, it took me about 20-30 minutes by myself. It came with all the pieces and the instructions were clear. The arms, headrest, and tilt are adjustable, and it's a very comfortable chair. It's supportive and perfect for my desk job. It's a little pricey, but it's a high quality chair.

  • K
    Kristy
    I recommend this product
    Rated 5 out of 5 stars
    September 25, 2025
    Good purchase!

    So far so good! Chair was delivered quickly, packaged well, had extra parts, labeled well and went together easily. A plus all around. And it’s comfortable. I’ve only had it a few weeks but so far, definitely a good purchase.

  • JW
    Jason W.
    I recommend this product
    Rated 5 out of 5 stars
    September 19, 2025
    Comfortable ergonomic chair

    Very comfortable ergonomic chair. I was recently diagnosed with a pinched nerve in my right shoulder/back, and the chair I was using previously did not have good enough adjustability with lumbar and the arm rests could not raise/lower. Once I assembled the chair and sat it in for the first time, I was able to dial in my perfect seating position, and I can honestly say that it was a night and day difference between my old chair (which was a Gaming computer chair) and this chair.

  • JW
    Jordan W.
    I recommend this product
    Rated 5 out of 5 stars
    September 17, 2025
    Amazing Desk Chair!

    Amazing chair, had it for about a month so far and it's great! The mesh is nice and still firm so far, the height and lumbar adjustments are perfect. However, I have had some issues with the headrest since it feels like it doesn't go up far enough, still comfortable though since its mesh is as strong as the seat. So far, amazing chair and will definitely buy from SIHOO again!

  • DC
    Dylan C.
    I recommend this product
    Rated 5 out of 5 stars
    September 16, 2025
    Awesome chair good service!

    Great chair! They covered my warranty even after the mechanism had broke and screws snapped. Free of charge and I got a nice new chair! 5 stars. On top of that I absolutely love this chair and would rather get a new one rather than swap. Amazing value!