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Sihoo C300 Ergonomic Office Chair with Advanced Back Support

4.8
Rated 4.8 out of 5 stars
356 Reviews
Sale price $279.99 Regular price $559.99

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.

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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 356 reviews
Total 5 star reviews: 291 Total 4 star reviews: 60 Total 3 star reviews: 1 Total 2 star reviews: 1 Total 1 star reviews: 3
99%would recommend this product
Slide 1 selected
356 reviews
  • MY
    Mike Y.
    I recommend this product
    Rated 5 out of 5 stars
    October 30, 2025
    Good, quality chair at a reasonable cost

    For office chairs, there are super high end ones - expensive, comfy, built to last for many years. And there are super cheap ones — the kind everyone in the office does their best to avoid unless there are no other options. And then there’s “the in between” — like this chair. A moderate price range, aiming for good quality and comfort, without going to extremes.This office chair packs a lot of bang for the buck. The assembly process was straightforward, and they even include an extra bolt and washer for every step of the process, just in case. The quality is quite good, not great, but appropriate for the price range. And it’s pretty comfortable for the right body type. For instance, my wife loves the significant lumbar support, but for me the lumbar support is a bit too much.You can lock the chair into position straight upright, or release the lock, lean back a bit, and lock it into a slightly reclined mode. That’s great. Overall? It’s quite good, and excellent value for your money. It’s comfortable and feels solidly built, as well.

  • RR
    RIJO R.
    I recommend this product
    Rated 5 out of 5 stars
    October 24, 2025
    Value for Money • Sturdy

    Sturdy and reliable, strong enough for the price and also have enough features for the price

  • Z
    Zona
    I recommend this product
    Rated 5 out of 5 stars
    October 22, 2025
    Best Ergonomic chair

    Perfect chair if you are work long hours. Really helped me with my back ace. Love the design!

  • OV
    Oleksandr V. B.
    I recommend this product
    Rated 5 out of 5 stars
    October 20, 2025
    Super comfortable

    I really like this chair—it’s comfortable, supportive, and looks great in my home office. The dynamic lumbar support makes a big difference during long work sessions. The armrests are super soft and adjust easily to fit how I sit. Overall, it’s a solid, well-designed chair that I’d definitely recommend.

  • A
    Amber
    I recommend this product
    Rated 5 out of 5 stars
    October 18, 2025
    Best chair for the price

    I didn't realize how uncomfortable my old chair was until I got this one! The head rest, lumbar support, and seat cushion is everything I need as a tall plus sized office worker. The only thing I'd change is being able to move the arm rest up and down (they flip, go side to side and shift front to back) but that's likely something I'll just get used to! I highly recommend this seat for anyone who works long office hours and tends to forget to get up and stretch!