30-Day Free Returns & 3-Year Warranty

Sihoo C300 Advanced Ergonomic Office Chair with Advanced Back Support

4.8
Rated 4.8 out of 5 stars
329 Reviews
Sale price $329.99 Regular price $399.99

Color: Black
Version

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

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Venmo
  • Visa

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!

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 329 reviews
Total 5 star reviews: 265 Total 4 star reviews: 59 Total 3 star reviews: 1 Total 2 star reviews: 1 Total 1 star reviews: 3
98%would recommend this product
Slide 1 selected
329 reviews
  • T
    TennesseeBuyer
    I recommend this product
    Rated 5 out of 5 stars
    September 10, 2025
    Great chair for my short body

    I am 5’3” and love this chair. I’ve tried many chairs looking for the right seat depth and lumbar support and this one is a winner. My short arms actually reach the arm rests. The lumbar support is where I need it. Lots of adjustability. The packaging for the screws was the best I’ve ever seen. Glad I got the option with the headrest.

  • ML
    Michael L.
    I recommend this product
    Rated 5 out of 5 stars
    September 10, 2025
    Amazing Office Chair

    After spending way too many hours in a cheap office chair, this one feels like a throne. The dynamic lumbar support is a game-changer—it adjusts as I move, so I never feel stiff after long workdays. The 4D armrests are super soft and adjustable, and the chair itself feels solid, even for my taller frame. Assembly was straightforward. I can sit in this chair comfortably for 8–10 hours a day, which is something I never thought I’d say. Great investment if you work from home or sit for long stretches.

  • TC
    Tatiana C.
    I recommend this product
    Rated 5 out of 5 stars
    September 9, 2025
    Quality chair and sturdy

    I really like this office chair. We got it because my other chair that I have is pretty cheap quality and this was a massive upgrade. It offers very nice lumbar support as well as looking really nice. Every single part of it is very nice and sturdy and it was super simple to assemble. There is a lot of adjustment throughout the whole chair from the lumbar support, to the arm rests, to the headrest. Definitely a nice chair to look at if you are in need of an upgrade.

  • RG
    Renz G.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    September 6, 2025
    5 Stars

    I recently got the SIHOO Ergonomic Office Chair and it has been a great addition to my workspace. Assembly was straightforward and the chair is comfortable, supportive, and adjustable. The mesh back keeps me cool. Highly recommended.

  • IT
    Im t. g. p.
    I recommend this product
    Rated 5 out of 5 stars
    September 1, 2025
    Well made chair

    Box that came with the chair was quite heavy. Moved it well enough.Box was a bit banged up but the chair was fully protected and unharmed.Putting the chair together took about 20 minutes. Instructions were clear and easy to read and understand. I’ve put many of these types of chairs together over the years and this was smoother than a few.The chair itself is very well made and comfortable. I sweat a lot and run hot, so this allows me to feel more airy. Very comfortable and fully functional. I’m a large individual so it holds my weight well. It looks more expensive than it is. For the price and quality i definitely recommend it.