Stay supported and comfortable no matter how you sit, and enjoy a better working, gaming, or creative experience.
"Boasts some top-tier features we didn't expect from its price point"
For people who want real lower-back support without paying for extras. The lumbar support adjusts two ways, and the mesh back keeps you cooler through a long day.
Free delivery Australia-wide in 1 to 5 days. Price in AUD.
SIHOO M18 Ergonomic Office Chair
Everyone asks this first
Sihoo lists the M18 for people from 150 to 190 cm tall. Enter your height and we will check it against that range.
Input your height and weight:
The 150 to 190 cm range and 136 kg rating come from the product page FAQ. If you are close to either limit, call 1300 002 580.
From people who paid for it
The reviews live on the product page. We have not copied any here until we can show them verbatim.
Read the latest verified reviews, with photos, on the product page.
Read all 344 reviewsOne outside review. Press play to load it.
THE TAB YOU WERE GOING TO OPEN NEXT
Independent reviewers rated the M18 well on back support. They also named the weak spots.
“Fantastic back support for those who need it.”
AppleInsider headline for its Sihoo M18 review, which scored it 4.0 out of 5.
The reviewer called the lumbar support excellent and said assembly took 30 minutes to an hour. Their cons: it may not suit people over 6 ft 2 in or under 5 ft 3 in, and the armrests do not adjust sideways.
4.0 out of 5. Read the review from AppleInsider (opens in a new tab)
Testers praised comfort and lumbar support without breaking the bank. They found the assembly instructions confusing, the wheels hard to roll and the lumbar adjustment stiff.
Review of the M18 Ergonomic Big and Tall version. Read the review from TechGearLab (opens in a new tab)
WHERE THE MONEY GOES
Dimensions and ratings come from the product page FAQ.
The support adjusts to sit against your lower back. This is the feature reviewers mention most.
Air moves through the backrest, which helps in warm Australian rooms.
It supports your head and neck when you sit upright or lean back.
Your arms rest at the right height. If you sit six hours or more a day, Sihoo points to the M18 Pro’s 4D armrests.
IF YOU ARE STILL DECIDING
Plenty of people land here still choosing. Every row below comes from the two product pages.
| Compare the chairs |
SIHOO M18
|
SIHOO M57
|
|---|---|---|
| Price | $279 | $329 |
| Listed user height | 150 to 190 cm | 155 cm to 185 cm (roughly 5'1" to 6'1") |
| Weight rating | 136 kg | 150 kg |
| Seat and back | Mesh back | Full mesh seat and back |
| Lumbar | Dual-adjustable | Dual-adjustable, up and out |
| Armrests | 2D | 3D |
| Recline | Up to 126 degrees, lockable | Up to 126 degrees, lockable |
| Headrest | Adjustable | Up 8 cm, rotates 45 degrees |
| Footrest | Black with Leg Rest option | Separate M57 footrest listing |
| Warranty | 3 years | 3 years |
Straight version: if you are 150 to 190 cm and sit under four hours a day, the M18 is enough chair and saves you $50. Want a full-mesh seat, 3D armrests and a recline that locks back to 126 degrees, take the M57. Sitting six hours or more? Sihoo says the M18 Pro is worth the extra $90. Read Sihoo’s M18 vs M57 guide for more.
BEFORE YOU BUY
These come from Sihoo’s own guidance and two independent testers. The AppleInsider test is from 2023.
Sihoo says the M18 Pro, with 4D linked armrests and self-weight sensing recline, is worth the extra $90 at that point.
The listed range is 150 to 190 cm. Outside it, call us first.
The listed rating is 136 kg. We would not sell you a chair outside its rating.
AppleInsider said the M18 may not suit people over 6 ft 2 in (about 188 cm). Sihoo lists up to 190 cm.
Two outside reviews noted the armrests do not adjust sideways.
Testers took 16 minutes to an hour. TechGearLab found the instructions confusing.
The honest offer: reviewers rate the M18 well on back support and value, and both flag assembly and armrests. It is a good fit if you are 150 to 190 cm and sit under about four hours a day.
Free delivery in 1 to 5 days. Three-year warranty. And if you are outside 150 to 190 cm, ring us first.
A closer look at your next chair.
Under four hours a day, the M18’s 2D armrests and dual lumbar support are enough. At six hours or more, Sihoo says the M18 Pro’s 4D linked armrests and self-weight sensing recline are worth the extra $90.
The M18 is $279 and lists 150 to 190 cm. The M57 is $329 with a full mesh seat and back and 3D armrests. See the comparison table above.
Yes. Sihoo lists it for home offices, study spaces and professional workspaces.
It is rated to 136 kg (300 lb) and listed for people from 150 to 190 cm. Outside those numbers, call 1300 002 580.
Find it in Sihoo’s installation guides. One tester marked the instructions down, so allow extra time.
Yes. The Black with Leg Rest option adds a fold-out footrest.
Seat height is 43.4 to 52.7 cm, seat width is 51 cm and seat depth is 45.5 cm. Overall chair height is 112.4 to 129.4 cm.
136 kg (300 lb). It is listed for users from 150 cm to 190 cm tall.
It uses a breathable mesh back designed to improve airflow during long sitting hours.
AppleInsider scored it 4.0 out of 5 and led with its back support. TechGearLab praised comfort and lumbar support and marked down assembly. Owners rate it 4.7 from 344 reviews.
A 3-year warranty is listed on the product page. Read the warranty policy for coverage, then use the repair request page for parts or claims.
