SIHOO M18 Review: Is This Budget Chair Good Enough? (2026)

What Is the SIHOO M18?

SIHOO is a manufacturer known for affordable ergonomic office chairs, and the M18 is one of its best-known models. It brings features usually associated with more expensive chairs, including a headrest and adjustable lumbar support, to a budget price, which has made it a frequent choice for first home offices and student desks.

In our guide to the best office chairs, it is our pick for the best budget office chair.

SIHOO M18 Specifications

Specifications vary slightly between M18 versions and listings, so check the details on the listing you choose.

Comfort and Support

Back and Lumbar

The M18's S-shaped mesh back follows the natural curve of the spine and breathes well, which helps during warm days. The lumbar support can be adjusted to sit closer to your lower back. It is a real benefit at this price, although it is less precise and less durable than lumbar systems on mid-range and premium chairs.

Headrest

The adjustable headrest supports your head and neck when you lean back, which is useful for reading, calls and short breaks. Few chairs in this price range include one.

Seat

The wide cushioned seat is comfortable for moderate sessions. It does not adjust in depth, so people with particularly long or short thighs may find the fit less than ideal.

Adjustments and Recline

The M18 offers seat height, recline with lock, adjustable lumbar, an adjustable headrest and height-adjustable arms. That is a solid set for the price, but it lacks the seat depth adjustment, 4D arms and refined recline mechanisms found on chairs like the Steelcase Series 1.

SIHOO M18 vs. HON Ignition 2.0 vs. Steelcase Series 1

The M18 wins on price and includes a headrest as standard. The HON Ignition 2.0 and Steelcase Series 1 add seat depth adjustment, better arms and stronger long-term durability for a step up in price.

When the M18 Makes Sense, and When to Step Up

The M18 is a sensible choice for students, part-time remote workers, gamers on a budget and anyone replacing a dining or kitchen chair. It is a big improvement over a chair with no ergonomic support at all.

If you sit at your desk all day, every day, a better chair will usually be more comfortable and last much longer. The Steelcase Series 1 is the natural next step, and for full-time desk work, premium chairs like the Steelcase Leap V2 or our top pick, the Herman Miller Aeron, offer far more support and come with 12-year warranties.

How to Set Up the SIHOO M18

1. Seat height: feet flat on the floor and thighs roughly level.
2. Lumbar: adjust the support to meet the curve of your lower back.
3. Headrest: position it so it supports the back of your head when you recline, not when you sit upright.
4. Recline: lock the back upright for typing and unlock it for breaks.
5. Arms: set the height so your shoulders relax and your elbows rest at about desk level.

What Owners Commonly Mention

Owners frequently praise the M18's value, its headrest, its breathable mesh back and how much more supportive it feels than a basic chair. Common complaints include simpler, less durable components, a seat that some find firm or flat over long sessions, and arms with limited adjustment.

SIHOO M18 Pros and Cons

Who Should Buy the SIHOO M18?

• Buy it if you have a tight budget and want lumbar support and a headrest.
• Buy it if you sit a few hours a day, or need a chair for a student desk.
• Step up if you work full time at a desk; see the Steelcase Series 1 or the premium chairs in our best office chairs guide.

Budget vs. Premium: What You Give Up

The M18 gives you a meaningful step up from a basic chair. Premium chairs give you precision, durability and long warranties that matter most when you sit all day.

Buying Tips

• Check the listing version: SIHOO sells several M18 variants with different wheels, armrests and colors.
• Measure your desk height: make sure the seat height range suits your desk and your legs.
• Set aside time for assembly: the M18 ships in parts.
• Use a chair mat on hard floors if your version has standard casters.

Is the SIHOO M18 Worth It?

As a budget chair, yes. It delivers more ergonomic features than you would expect at its price and is a clear upgrade over a non-ergonomic chair. Just be realistic: it is not built to the standard of chairs that cost several times more. If your chair is where you spend your working life, investing in a premium chair is money well spent.

Gaming on a budget? See our best office chairs for gaming and office chair vs. gaming chair guides.

SIHOO M18 FAQs