SIHOO B100 PRO Honest Review

My partner and I both work from home, and in March we ordered two SIHOO B100 PRO chairs at the same time, one for my desk in the guest room, one for hers in the corner of our bedroom we turned into a second workspace. That decision, buying two instead of one, ended up teaching me things a single-chair review never surfaces: how consistent the manufacturing actually is, what customer service looks like when something goes wrong, and whether the chair fits the same way on two very different bodies. I'm 6'1", 210 pounds. She's 5'4", 140 pounds. Same order, same delivery day, same afternoon of assembly, two different experiences.

Most reviews of this chair, including the glowing five-star kind, read like they were written the week the box showed up. At Best Home Office Setup Hub we try to wait long enough to catch the stuff that doesn't show up in week one: the squeak that starts in month two, the part that breaks under normal use, what it's actually like emailing a manufacturer's support line instead of just clicking return on Amazon. Four months in, running two of these chairs instead of one, here's the version of this review I wish someone had written before we ordered.

How We Tested

We kept a shared notes doc from the day both boxes arrived, and every Sunday for sixteen weeks we each logged a quick discomfort rating and anything worth mentioning, a squeak, a part that felt loose, a setting we changed. Neither of us set out to turn this into a two-person comparison. It happened because ordering two chairs at once was cheaper on shipping, and once we had two identical chairs going through the same weeks under two different bodies, the differences became impossible to ignore.

My setup is a 46-inch fixed-height desk against a hardwood wall in what used to be our guest room. Hers is a smaller corner desk on carpet in our bedroom, no standing option, less natural light. Different floors mattered later, more on that below. Both boxes came from the same warehouse batch based on the ship-by date printed on the outer carton, which turned out to be a useful detail when one of them arrived with a defect and I wanted to know if it was a fluke or a pattern.

I'm not a physical therapist and this isn't a clinical trial. It's two people who sit for work eight to nine hours a day, logging what actually happened instead of writing a review the week the box arrived and calling it done.

The Unboxing Nobody Photographs

The box itself weighs close to 60 pounds and is roughly the size of a small dresser drawer stood on end. If you live in a walk-up or you're ordering this alone, plan for that, it's not a box you casually carry up two flights by yourself. Inside, the packaging is dense foam and cardboard dividers, more of it than felt necessary, and both boxes left us with a small pile of styrofoam corners and plastic sleeves that took up half a trash bag.

My chair assembled without issue in about 40 minutes. Hers had a cracked plastic mount where the right armrest bolts into the seat frame, visible as soon as we pulled the part out of its foam sleeve, before any tool had touched it. It wasn't a shipping-damage crack from the box getting dropped, the foam around it was intact and undisturbed. It looked like a manufacturing flaw in that specific piece. The screws in both boxes came in unlabeled bags sorted only by size, so if you've never built flat-pack furniture, expect to lay everything out and match parts to the diagram before you start, not while you go.

We didn't catch the crack until we were already forty minutes into her assembly, which meant unbolting the seat pan again to get at the mount. If you're assembling this alone, I'd unpack every piece first, lay it out, and eyeball the plastic components under good light before you start turning any bolts. Ten extra minutes up front would have saved us twenty later.

The Smell, the Squeak, and Other Small Things

Both chairs had a mild chemical smell out of the box, the kind you get from new foam and fresh plastic. It was noticeable for the first three or four days and gone by the end of week one. We left both chairs in a room with a window cracked for the first weekend, which probably sped that up. Neither of us found it strong enough to be a real problem, just worth knowing about if you're sensitive to new-product smell.

My chair developed a faint squeak around week eight, a small creak from the caster housing whenever I rolled back from the desk. It's on hardwood, hers is on carpet, and her identical chair never squeaked at all, which tells me it's more about the floor and how the caster axle sits than a defect in the part. A few drops of a household lubricant on each caster axle fixed mine completely, and it hasn't come back in the two months since. Worth doing preventively if you're also on a hard floor.

The headrest ratchet clicks audibly every time you adjust its height, more of a solid clunk than a smooth glide. Neither of us minds it, but it's louder than the previous office chairs we'd each owned, and it's the kind of thing that would bother you on a video call if you adjusted it mid-meeting.

What Happened When a Part Broke

I emailed SIHOO's support address the same evening we found the cracked armrest mount, with the order number and two photos, one of the crack, one of the intact foam packaging around it. I expected a slow back-and-forth or a demand that we box the whole chair back up. Instead I got a reply within about a day and a half asking only for the part number stamped on the mount itself, which meant flipping the chair over and reading a small embossed code.

The replacement armrest bracket shipped free and arrived in a small padded envelope nine days later, no return shipping, no restocking questions, no request to send back the whole chair. I've dealt with furniture warranty claims before, including one with a different chair brand a few years back that required a full return and a three-week wait for a refund before they'd process a new order. This was faster and required less from us, and it's the part of owning this chair that actually made me trust the company more, not less, even though something had gone wrong.

That said, a defect straight out of the box on one of two chairs from the same shipment isn't nothing. If you order this chair, unpack and inspect the plastic components before you start assembly, and keep your order confirmation handy in case you need it.

Comfort Reality Check: It's Not Built the Same for Every Body

At 6'1", the seat depth works for me, my knees clear the front edge with a couple inches to spare when the lumbar is dialed in properly. The headrest sits a little low even at its maximum height, which I adjusted around by tilting the backrest back slightly during calls rather than relying on the headrest itself. Not a dealbreaker, but I noticed it every day for the first month before I stopped thinking about it.

My partner's experience was rougher. At 5'4", the seat pan is deep enough that with her back against the lumbar support, her knees don't reach the front edge, which meant either sitting further forward and losing the lumbar contact, or sitting back and having her legs stick out with no support under her thighs. She ended up using the pull-out footrest almost constantly, not as an occasional recline feature the way I do, but as a near-permanent prop to compensate for the seat depth. The armrests also wouldn't drop low enough for her shoulders to sit relaxed, she keeps them at their lowest setting and it's still slightly higher than she'd like.

We also had to set the recline tension knob in opposite directions, tighter for me at my weight, looser for her, which is expected and not a flaw, but it meant the chair needed real individual setup time for each of us rather than an out-of-the-box fit. If you're under 5'6" or so, I'd genuinely recommend sitting in this chair somewhere in person before ordering, or being prepared to lean on the footrest more than you'd expect.

What the Product Photos Don't Show You

The mesh in person has a visible woven texture that reads as flatter and smoother in Amazon's listing photos, more like a tightly knit fabric than the almost plastic-smooth look in the pictures. It's not a bad look, I actually prefer it in person, but it's a different material impression than what you'd expect scrolling through the listing on your phone. The black color is consistent between both of our units, no noticeable difference in shade between the two boxes.

The chair also reads smaller in a real room than it does staged against a plain background online. In my guest room against a hardwood wall it looks appropriately sized for a serious office chair. In her smaller bedroom corner, it initially felt a bit large for the space, something to keep in mind if you're working with a tight footprint rather than a dedicated room.

Would We Buy Two Again

Buying two chairs from the same order saved us a bit on shipping and let us assemble side by side on the same Saturday, but it also meant carrying the same defect risk twice instead of once. If I were doing it again, I'd still order two, the combined delivery and the shared setup day were worth it, but I'd unpack and check both boxes fully before assembling either one, rather than building mine first and only discovering the crack in hers forty minutes into her build. That single change would have saved a frustrating hour.

On value, two SIHOO B100 PRO chairs at today's price still land well under what a single comparable premium ergonomic chair would run, and for my body that trade held up completely. Real adjustability, a five-point steel base, and support that actually replaced a broken part without a fight, all for less than half of what a name-brand alternative would have cost for one chair alone. For my partner's body, the value is real but qualified. She's using the footrest as a daily workaround rather than getting a seat that fit her out of the box, and that's worth weighing carefully if you're petite and buying sight unseen instead of testing it somewhere first.

The five-star reviews don't mention the cracked bracket or the nine-day wait for a replacement part. They also don't mention that the same chair that fit me perfectly left my partner propping her feet up all day just to feel supported. Both of those things are true, and neither shows up in a one-week review.

Who This Is For

If you're average height or taller, roughly 5'7" and up, and you want real adjustability without spending premium-brand money, this chair holds up to daily use and the company stands behind it when a part fails. It's also a reasonable pick if you're willing to inspect your order carefully on arrival and don't mind a bit of extra assembly patience in exchange for a chair that's meaningfully better built than budget mesh options under $150.

Who Should Skip It

If you're under about 5'6", especially closer to 5'4" like my partner, sit in one somewhere before you buy, or be ready to lean on the footrest and lower armrest settings more than the marketing photos suggest you'll need to. If you're ordering during a busy week and won't have time to inspect the parts and possibly deal with a support ticket, budget an extra week of patience into your plan. And if a squeaky caster or a louder-than-expected headrest click would genuinely bother you during calls, know those are realistic possibilities, not just theoretical ones.