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Sihoo Doro C300 review

You can even put your feet up in this ergonomic office chair: Sihoo Doro C300 review

Work & Relax.

If you sit at your desk a lot, a comfortable office chair is particularly important. The Sihoo Doro C300 offers a wide range of ergonomic features for around $500. Our review reveals what this ergonomic desk chair offers and what it is good for.
Marcus Schwarten (translated by DeepL / Marcus Schwarten) Published 🇩🇪
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Sihoo Doro C300 test conclusion: Adjustable office chair at an affordable price

The Sihoo Doro C300 scored highly in our test with its various adjustment functions, even if there is still room for improvement. It enables a sitting position that can be adjusted in various ways and offers good back support, especially with the dynamic and self-adjusting lumbar support. This benefits people who work at a desk all the time, as they can sit comfortably on the chair for many hours.

Ultimately, the fit depends primarily on your height. We don't quite agree with the manufacturer's specifications. From a good 180 cm, the height adjustment of the backrest and headrest is not sufficient according to our findings. However, people up to 180 cm sit comfortably according to our impressions.

The optional footrest is practical and pleasant for everyday office use and invites you to relax when needed. Overall, the Sihoo Doro C300 made a good impression in our test, with some limitations.

Pros

+ solid adjustment options
+ supportive function of the dynamic lumbar support
+ relatively inexpensive
+ also suitable for heavier people (up to approx. 136 kg)

Cons

- not ideal for people over approx. 180 cm
- armrests adjust too easily

Price and availability

The recommended retail price for the Sihoo Doro C300 is $559.99. The optional footrest costs $40 extra. The ergonomic office chair is available in two colors, black and white, directly from the manufacturer and on Amazon.

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There are numerous ergonomic office chairs on the market. Many models cost a lot of money, which not everyone can or wants to pay. Sihoo, on the other hand, offers a solution with the Doro C300 that only costs around $500 - in some cases even less.

We used the ergonomic office chair in a practical test over a longer period of time and reveal what it has to offer and how well we sat on it.

Important features at a glance

adjustable backrest angle with self-adapting lumbar support
adjustable headrest and 4D armrests
optional extendable footrest
airy mesh cover
Seat surface approx. 51 x 46 cm
load capacity up to approx. 300 lbs

Scope of delivery and assembly: Ready for use in around one hour

We were provided with the Sihoo Doro C300 including the optional footrest in white. It should be mentioned right away that the color should actually be grey. The chair is predominantly in very light gray, which is somewhat reminiscent of old computer hardware.

At first glance, we don't really like the relatively "colorful" mix of colors. The Sihoo Doro C300, declared as "white", presents itself with castors and base in black, star-shaped aluminum swivel base and gas pressure spring in shiny silver, frame in light grey plastic, mesh cover in another light shade of grey and medium grey armrests.

Scope of delivery of the Sihoo Doro C300
Scope of delivery of the Sihoo Doro C300

The ergonomic office chair was delivered in two rather large and heavy boxes. Unpacked, they contain around 20 parts as well as a whole range of screws and other small parts. The advantage is that all the tools are included in the scope of delivery, so there is no need to dig in the toolbox. Another positive aspect is that the manufacturer does not use large polystyrene blocks as packaging material and instead uses cardboard. In the end, a 25-liter bin bag was still full of bags and other plastic waste.

Assembly instructions for the Sihoo Doro C300
Assembly instructions for the Sihoo Doro C300
The chair cross must first be screwed together
Star-shaped turnstile still without castors
The rollers are simply pressed in
The gas strut as well
The connection between the seat and backrest is made with three screws
Mounting the armrests
The upper part of the chair is waiting to be

The instructions explain the assembly of the chair in relatively small pictures and without many words, but are ultimately easy to understand. A total of 11 steps are required, which should take around 30 to 60 minutes depending on your skills.

On the whole, we found it easy to assemble. When connecting the seat and backrest, it is particularly important that the two parts are screwed together precisely. Otherwise it will not be possible to fit the armrests later on. It is also advisable for two people to assemble the chair, at least when placing the upper part of the chair on the swivel base and gas pressure spring. Especially as the chair weighs well over 20 kg in total.

Equipment and quality: various customization options

The Sihoo Doro C300 offers various adjustment options. In addition to height adjustment of the seat by approx. 8 cm using a gas pressure spring, the backrest can also be adjusted in height by approx. 6 cm in four stages. A little more would be desirable here, as we explain below. The headrest can be adjusted by approx. 5 cm in height and twice in angle and position.

The Sihoo Doro C300 fully assembled
The Sihoo Doro C300 fully assembled

Unfortunately, the seat of the office chair, which can hold up to approx. 300 lbs, cannot be adjusted horizontally. It measures around 51 x 46 cm in width and depth and, like the backrest and headrest, is covered with mesh fabric. This ensures that it adapts well to the shape of the body and also prevents excessive sweating on the contact surfaces on hot days.

The seat is surrounded on the left and right by a lightly padded 4D armrest. These can not only be adjusted up to 9 cm in height, but can also be moved forward by a few centimetres. The fact that they can be reclined to around 45 degrees is particularly practical for relaxed sitting. This allows you to rest your arms comfortably on them while your hands rest on your stomach.

Upholstered 4D armrests
Upholstered 4D armrests

The adjustment of the individual components is smooth, but the locking mechanism leaves a predominantly stable impression. Only the armrests turn a little too easily to the left and right for our taste.

Overall, the Sihoo Doro C300 makes a high-quality impression and is well made. There are no creaking noises, sharp edges or anything similar. Nothing concrete can be said about the long-term quality in our limited test period. According to the manufacturer, the chair withstood 100,000 cycles without deformation in the TÜV endurance test. Sihoo also offers a 3-year guarantee and a 30-day free return policy.

Seating comfort: supportive lumbar support and optional footrest

The manufacturer advertises that the ergonomic office chair should fit people from 155 to 190 cm. I have to disagree with that. I'm a good 180 cm tall myself and apparently have a relatively long upper body. Both with this model and with one or two other similar models, I couldn't get my shoulders properly under the headrest. This means that when sitting upright and leaning back, my shoulder blades collide with the lower edge of the headrest, even with the backrest raised to the maximum and the headrest turned upwards. In contrast, a test person around 175 cm tall had no problems at all.

Overall, the Sihoo Doro C300 allows you to sit comfortably at work
Overall, the Sihoo Doro C300 allows you to sit comfortably at work
From a height of around 180 cm, however, the headrest should sit a little higher
From a height of around 180 cm, however, the headrest should sit a little higher
The lumbar support of the Sihoo Doro C300 is very comfortable in the test
The lumbar support of the Sihoo Doro C300 is very comfortable in the test

Apart from this height-dependent problem, the Sihoo Doro C300 made a comfortable impression on two different testers with different heights and weights. The dynamic and self-adapting, but not manually adjustable lumbar support is particularly comfortable.

At first glance, you would actually expect this relatively pronounced hump to "be in the way" and press uncomfortably into the back. Instead, however, it supports and cushions the curvature of the back in the lower area and thus ensures a more relaxed, upright sitting position even when sitting at a desk for long periods of time.

A rocking function can be activated on request, but the resistance cannot be adjusted. This allows you to lean back comfortably on the Sihoo Doro C300 (up to approx. 130 degrees). If the footrest, whose mesh-covered leg rest can be adjusted in angle, is then extended, a short power nap or a short relaxation break is also possible directly on the office chair. The armrests also fold backwards.

It's a good way to get through the test day :-)
It's a good way to get through the test day :-)

Transparency

The selection of devices to be reviewed is made by our editorial team. The test sample was given to the author by the manufacturer free of charge for the purposes of review. There was no third-party influence on this review, nor did the manufacturer receive a copy of this review before publication. There was no obligation to publish this review. As an independent media company, Notebookcheck is not subjected to the authority of manufacturers, retailers or publishers.

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> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > Reviews > You can even put your feet up in this ergonomic office chair: Sihoo Doro C300 review
Marcus Schwarten, 2025-11-27 (Update: 2025-11-27)