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SIHOO M18 Ergonomic Office Chair Review

Shopping for a new chair can be a challenging task with thousands of office chairs available on the market. While most people only consider the budget and the softness of an office chair, it’s always best to consider several more factors than that. Who knew that deciding on a chair that you can sit comfortably in for long periods would be that difficult? 

As daunting as it may sound, the best kind of office chair will not only allow you to comfortably sit for long hours but also provide numerous adjustable features to properly support the body. One such chair is the Sihoo M18 Ergonomic Office Chair.

About the Sihoo M18 Ergonomic Office Chair


ModelM18 Ergonomic Office Chair
Product Dimensions42.91-50 in (Overall height)
20.08 in (Seat width)
7.09 in (Headrest height)
11.18 in (Headrest length)
19.69 in (Backrest height)
20.47 in (Backrest length)
10.04 in (Armrest length)
27.56 in (Base length)
17.32-21.26 in (Base height)

The Sihoo M18 has a simple yet pretty sleek design. It may look more basic when placed next to other chairs, but don’t let that fool you as the M18 is much more than that. Unlike other ergonomic office chairs, almost every part of the M18 is adjustable — the headrest, armrests, tilt tension, and even its lumbar support.

Don’t believe us? Scroll below to learn more about the incredible features of this great chair!

Benefits of the Sihoo M18 Ergonomic Office Chair

Sitting on an uncomfortable chair can be detrimental to your health in the long run. What you need is a chair with an ergonomic design that’s comfy and provides you with full support. It’s a good thing that the Sihoo M18 embodies those qualities. Check out its best features:

Comfortable and Supportive Chair

Working a desk job can be hard on the body, especially if you have to stay seated for long hours. Sure, you can stand from time to time but that won’t do much if the chair you’re sitting back down on is uncomfortable. 

The Sihoo M18 has a lot of features that make it a comfy seat that’ll save your muscles and joints from being sore while working long hours. You can keep your arms rested while you work as the M18 has adjustable armrests that are covered in soft plastic that won’t wear down quickly. The middle of the armrests have a concave dip to fit your arm comfortably as it kind of hugs your arm when you rest on it.

The armrests are just the beginning of comfort and support with the M18. This chair also features a breathable mesh-covered seat with a W-shaped elastic sponge cushion that’s comfortable to sit in. There’s the adjustable headrest that holds the curvature of your neck and supports your head, reducing neck pain. Last but not least, the M18 has an S-shaped backrest with an adjustable lumbar support pillow.

Adjustable Lumbar Support and Other Features

You can adjust almost everything on the Sihoo M18. Let’s start with the overall height of the chair. With the built-in gas lift, you can raise the seat height within a 3.15-inch total range. Next, you can adjust the armrests up and down to suit yourself. The adjustable headrest can rotate up to 45 degrees and can be adjusted within a 3.9-inch range of up and down movement.

Finally, an ergonomic chair isn’t complete without proper lumbar support. The Sihoo M18 has a lumbar support that you can fine-tune using a knob. You can move it up and down with a range of 1.9 inches, moving the support right into the perfect spot on your back when sitting. You can also move it forward and backward within a range of 1.2 inches. 

If you want to sit back and relax after hours of desk work, the M18 has a reclining feature for you. There’s an easy push/pull mechanism to take the M18 from a sturdy upright position and tilt it to a relaxing one. The tilt ranges from 90 degrees up to 126 degrees as well, and it can be adjusted effortlessly.

Easy to Assemble

Similar to most chairs bought online, the Sihoo M18 Ergonomic Chair comes disassembled in the box. Worry not as assembly is pretty easy! You can assemble the Sihoo M18 office chair on your own but if you want it done the quickest way possible, asking a friend for help is always a great idea. You can use this assembly session as bonding time. 

With that said, to build the Sihoo ergonomic chair, you have to start with the chair’s base consisting of five aluminum alloy legs and five caster wheels that stick onto each leg. Then, flip the base over and set the hydraulic piece in the center hole. After that, you attach the armrests and the mechanism piece with bolts to the underside of the chair’s breathable mesh seat. 

While the seat is flipped upside down, you also attach the back piece with bolts. Once all of that is attached to the seat, you can lower the mechanism piece onto the hydraulic piece. The headrest simply slides into position above the back piece and it’ll click into place. Pretty easy assembly, right?

Pros and Cons of the Sihoo M18 Ergonomic Office Chair

✔️ Fits most body types
✔️ Suitable for individuals 5’6” to 6’2” tall
✔️ Excellent build quality
✔️ Breathable mesh back and seat cushion
✔️ Adjustable lumbar support
✔️ Arms and height can be adjusted as well
✔️ Offers neck support with the adjustable head rest
✔️ Tilt range of 90 degrees to 126 degrees
✔️ Easy to assemble with clear instructions
✖️ Assembly may require two people
✖️ Armrests cannot be adjusted forward or backward

Is the Sihoo M18 Worth It?

This Sihoo chair is an excellent choice if you want an office chair that provides a lot of support and comfort. It has an affordable price tag and compared to most chairs around the same range, the M18 offers more adjustability to suit a user’s needs. It’s very much worth it.

What Brand Is Sihoo?

Sihoo is a Chinese ergonomic furniture brand that was established in 2011. While the brand is known for its chairs, it also has standing desks in its lineup.

What People Are Saying About It

Many office chairs are raved about here and there, but a lot of them can be very pricey. It’s nice to have a pretty affordable option in the M18. Most chairs at the price of the Sihoo M18 can’t even offer this wide range of adjustable features.

You can adjust the armrests, headrest, height, and even the lumbar support according to your liking. Furthermore, the M18 is truly an ergonomic wonder for those long periods in front of the computer, whether you’re working or gaming.

“My final thoughts on the Sihoo M18: SIHOO’s M18 Ergonomic Office Chair is a comfortable, supportive option that’ll leave your back feeling great at the end of a long work day. Though you can’t adjust the armrests, you can adjust the headrest, the lumbar support, and the seat height. In short, the chair provides ergonomic comfort at a budget-friendly price.”

Reviewer – How-To Geek

Where to Buy the Sihoo M18 Ergonomic Office Chair

If you want an office chair that can help you keep a healthy posture, definitely make space for the Sihoo M18 in your office. To get this chair delivered to your doorstep, simply shop for it on Amazon to get the best deals and prices

Frequently Asked Questions

Which Sihoo ergonomic chair is best?

Is Sihoo a Chinese company?

Sihoo M18 Ergonomic Office Chair

Designed to promote a healthy sitting posture as well as provide the utmost comfort to any user, the Sihoo M18 Ergonomic Chair is ideal for anyone who works numerous hours at a desk.

It comes with an array of features that you can modify, such as the armrests, headrests, seat depth, height, and tilt. It’s a highly versatile chair that can adapt to anyone’s specific needs, whether they’re tall or short.

While it comes disassembled in the box, it’s easy enough to put the chair together for the most part. Best of all, the price of this chair is unbeatable, so if you’re looking for something that’s a bang for your back, the Sihoo M18 is one you should fix your eyes on.

The Review

96% Best Value for Money Chair

Many people tend to pass up on buying an ergonomic chair due to the price. Certainly, a lot of ergonomic chairs can be pricey, but there are also incredible options out there that won't break the bank. One of them is the Sihoo M18 Ergonomic Office Chair. This chair comes with a ton of adjustable options that you won't find in other chairs in the same range. If you want a chair that can keep you comfortable all day long, the Sihoo M18 is your best bet.

Tricia Montano

Tricia founded Pain Free Working in 2019 due to suffering from degenerative disc disease in her L5-S1 from working an office job for the past 18 years. She and her team strive on finding and reviewing the best office equipment to help fellow pain sufferers find relief and to enable people like her to do their jobs comfortably.