SIHOO Doro C300 Ergonomic Office Chair Review

As Luffy and the Straw Hats search for the One Piece, I have been searching for the one chair to perfectly match my ergonomic needs. My current chair has been dying on me for some time, so this was a perfect opportunity to see what SIHOO had in store with their new versatile SIHOO Doro C300 Ergonomic Office Chair.

Some of the key features of the SIHOO Doro C300 Ergonomic Office Chair include the fully adaptive backrest and its 4D adjustable armrests. It is engineered to support body weights up to 300 lbs, offering secure stability for a wide range of users. And like many great ergonomic chairs, this one features self-adaptive lumbar support for consistent waist support—really supporting your whole lower back. Also, it comes in two colours: black and grey—nothing bold but perfect for its target environment.

Consumers can also enjoy the 135-degree recline to switch up that seating position from work time to recharge and relax time. The adjustable headrest adds to the comfort factor, too, and is great for ideal neck support in any position. The breathable mesh material was on the better end, where it does not collect dust either. I know some office chairs have a similar-looking mesh material but can easily collect dust.

The SIHOO Doro C300 Ergonomic Office Chair has undergone the American BIFMA (Business Institutional Furniture Manufacturers Association) standardized whole chair testing, too. If you are like me and do not know what that means at first, it is a test that tests commercial furniture for its comfort, safety, sustainability and durability, amongst other factors. For everyone’s peace of mind, it was also tested under the German TUV (Technical Inspection Association) product safety and quality certification. Again, this is another industry-recognized organization that tests office equipment to ensure they meet safety and quality standards.

In the box, the Doro C300 ergonomic office chair came with all of the parts neatly packed in a standard big box. The best tool included that got the job done smoothly was the T-wrench. It provided enough torque to easily screw everything in. There is an instruction manual included that clearly shows how to assemble the office chair, and it is relatively easy to understand.

All of the screws, washers (or as they call shims), T-wrench, Allen key and springs were included in a cardboard and plastic sheet with different compartments. It was a convenient way to get the parts needed as I completed each step of the build without being overwhelmed with so many parts included. The labels on this sheet of parts were also clearly marked with the name of the screws and sizes, including which part of the assembly it would be used for—super helpful at making sure you do not make a mistake using the wrong screw or shim.

Personally, I would not recommend the order of steps for some of the parts for a single person because installing the bottom with wheels while building up could lead to the chair sliding around while attaching the backrest. But with a pair of extra hands, this was a good suggested process.

I have never had to assemble the whole bottom of an office chair before; I had to install the metal wheel struts from the base plate and decorative plate. I am accustomed to it coming with either the bottom chassis pre-assembled with the wheels on or off. While it may be beneficial to pack in a compact box, it does add some additional time to assembly. 

“I would probably say the intended setup for the SIHOO Doro C300 Ergonomic Office Chair should be closer to the one-hour mark.”

As I was assembling the chair, I was disappointed to find out that a shim was missing from the armrest. I double-checked, and I did not misplace it when opening another part slot on the parts sheets. Another part that was disheartening was learning that one of the armrest holes, the screw threading, was very stripped. I could only get the screw about halfway in, even with the max torque. I tried not to force it numerous times but eventually got it further in with a bit more force.

Everything else about assembling the SIHOO Doro C300 Ergonomic Office Chair went swimmingly. I clocked in about two hours of assembly time, doing everything on my own. Unfortunately, searching for the missing part and coming up with a solution for the stripped screw hole stalled my time a bit. I would probably say the intended setup for the SIHOO Doro C300 Ergonomic Office Chair should be closer to the one-hour mark.

Once I securely assembled the chair, I was in a blissful state of comfort. The levers to adjust various positions were within arm and hands-reach; I did not need to bend over to adjust anything. There is one lever which I was able to change seat height and recline levels. Like many other office chairs, the lever can be pulled out to allow the chair to recline back, but the lever can be pushed in to disable reclining.

The breathable waterfall cushion design of the SIHOO Doro C300 Ergonomic Office Chair was the main game changer. I felt securely supported and cushioned from the first moment I sat in the chair. While this is a chair made for most average consumers, I found the seat size a couple of centimetres small with my thighs naturally not sitting in the intended seating area. I have ginormous glutes, but it is something to consider if you, too, have colossal glutes.

The 4D armrests and adjustable headrest also offered major benefits. The height selection and positions of the armrests were expansive and comfortable. My only peeve with them was how there is no way to lock them in a set position; they can move out of position slightly too easily.

Another suggestion to add greater value to this chair would be to use rubber or PU (polyurethane casters) wheels or potentially offer it as a swappable option. The problem with the regular plastic twin-wheel casters is that they can easily collect debris and hair, making it harder to clean after some extended use. This change or option would significantly raise the quality.

“The breathable waterfall cushion design of the SIHOO Doro C300 Ergonomic Office Chair was the main game changer.”

Upon hours of use writing at my desk and gaming for hours on end, the SIHOO Doro C300 Ergonomic Office Chair held up its end of the bargain. My back usually begins to feel a little stiff around the two or three-hour mark of sitting, but surprisingly, leaning back occasionally on the backrest was enough to crack my back. It was a useful alternative to getting up and using my foam roller every few hours. 

For $299.99 USD, this ergonomic office chair does what it needs to do—provide stable comfort. Despite some of its shortcomings, there is great value for its performance. The high-end ergonomic chair market can have a wide range, but the Doro C300 ergonomic office chair provides an option that is budget-friendly and comes with very useful features. For those looking for premium comfort without breaking the bank while working at their desk for hours on end, this is the chair that will keep you focused and well-rested.

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