SIHOO M18 Ergonomic Office Chair, Computer Desk Chair with Adjustable Headrest and Lumbar Support, High Back Executive Swivel Chair for Home Office (Pure Black)

M new chair arrived yesterday (delivered within 2 days). I put the chair together in around 15 mins and i'm no DIY/Flatpack specialist. I've used the chair today and its the most comfortable office chair I've ever owned. It has excellent support for my lower back and allows me to lock the back to give me the support my back needs. I have been suffering with a bad back of late and I can see this chair helping improve it.

It's massively better than Songmic Office Chair Ergonomic OBN52BKUK, which I bought for the spare room (although one might expect all these things are built in the same warehouse and designed by the same people). Like that, the Sihoo is limited and a tad flimsy around the arms, but overall, unlike the Songmic, it's overall a more comfortable sitting upright experience. The rollerblade-style wheels, which I'd never seen before on a chair, are of particular note: combined with the chair being fairly light, it's very easy to move around, it's like gliding, even on carpet. Ultimately, it is a cheap office chair, you go into it not expecting the best build quality, but to its credit it has decent lumbar support (far better than the Ikea Markus it replaced, and the Songmics), and just as crucially, a semblence of a headrest with a decent range of movement, which the Songmics lacks entirely. Frankly, I've used far, far worse chairs in professional offices back in the Before Times.Build is pretty easy, and the package includes a spare of everything, and an actually useful allen key with a big grip. I'm hanging on to that for future reference.My only real negative, even at this price point, is that while the back recline options are limited to two additional fixed positions as may usually be the case in these types of chair, neither of them feel right: even the 2nd position is a too far back for my taste, especially given the seat reclines with it, so it lifts your feet off the floor and you have to reduce the height, which is awkward as both are controlled by a single, dual-function lever.Still, for £136, and knowing the mesh will inevitably be torn to shreds by the cat in a few years, as happened to the Markus—hence why I can't risk even a second-hand Aeron—I don't think you'll be disappointed. Have low expectations, it will beat them easily.

It arrived 6 days before the expected delivery date, which was a really nice surprise.Assembly was really simple and I managed it by myself before I started work in around 15 minutes, there was a pair of mesh gloves to protect my fingers from the pre-greased bolts which was a nice additional extra.I bought this chair for its adjustability and I’m really pleased with it in that regard. Just about everything is adjustable and I found my ideal seating position really quickly, although I’ll probably tweak it over time. I’ve never had back pain so I can’t comment on its effect in that way but I can say confidently that I feel very supported and it definitely promotes good posture. The adjustable lumbar support is brilliant and feels really nice. The headrest is also really nice to lean back on and I can see it being really nice for lunch time naps with the seat reclined. The seat is nice and firm without being hard and feels like it will last a long time.One thing I’ve noticed is that on a hard floor, the wheels turn almost too freely, meaning that if I apply even a tiny bit of forward pressure with my feet on the floor, I slide away from my desk, but it’s not a major issue.Overall, I’m really pleased and I’m glad I didn’t spend the extra money on a second hand Herman Miller.