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

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
337 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

  • 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 337 reviews
Total 5 star reviews: 273 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
337 reviews
  • DS
    David S.
    I recommend this product
    Rated 5 out of 5 stars
    September 30, 2025
    Fast shipping great quality

    Arrived quickly easy to assemble high quality

  • S
    Sheri
    I recommend this product
    Rated 5 out of 5 stars
    September 28, 2025
    Easily Assembled In Half An Hour

    Exactly what was represented. Easily assembled in a half hour. Because of my bad back, I encountered a bit of a kerfuffle to put the assembled seat onto the pedestal, but other than that, the assembly went very smoothly. I couldn't be more pleased.

  • R
    RB
    I recommend this product
    Rated 5 out of 5 stars
    September 25, 2025
    Love it

    Amazing!!! So comfortable. Smaller than expected which is good so it takes less room

  • SS
    samuel s.
    I recommend this product
    Rated 5 out of 5 stars
    September 19, 2025
    Amazing quality product and customer service!

    I am impressed by the quality of the customer service as well as the quality of the chair itself 10/10 !

  • AY
    Arielle Y.
    I recommend this product
    Rated 5 out of 5 stars
    September 17, 2025
    Excellent office chair

    I've been using this office chair for the past several months, and it has completely changed my work-from-home experience. As someone who spends 8+ hours a day at a desk, comfort and support are essential—and this chair delivers on both. I like it very much. Definitely worth a try!