Sihoo office chair deal: This $160 early Prime Day upgrade packs a high-end feature I rarely see at this price

A lady sitting on the Sihoo B100 chair playing a video game, with a purple background and a TechRadar badge that reads 'Price Cut'
(Image credit: SIhoo // Future)

If you're looking for a cheap office chair deal before Amazon's Prime Day even starts, then you'll want to check out the Sihoo B100, now $160 (was $220) at Amazon.

I test and review a lot of office chairs every year, and for the price and feature-set, I don't think you can beat this mesh chair from Sihoo, which has impressed me and my team with its range of office furniture.

The main reason I'm recommending it isn't the ultra-low price (although that's nice). It's the fact that it has adaptive lumbar support that dynamically moves when you shift in your seat, so your lower back is always supported. I don't see this type of feature on most office chairs, let alone ones that cost $160. You'd need to spend double that to get anywhere close. Because of that, this is top of my can't miss office furniture ahead of the Prime Day sales.

See all early Prime Day deals at Amazon.com

Today's top Sihoo office chair deal

Sihoo B100 office chair
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Sihoo B100 office chair: was $219.99 now $159.99 at Amazon

For my money, the B100 is the best budget office chair in the sales - and that's mainly down to the adaptive lumbar support. I don't usually see this on cheap office chairs. The benefit is consistent support even when you move in your seat, reducing pressure on your lower back and helping your posture. A breathable mesh back, wide seat cushion, flip-up armrests, and adjustable recline angles round out the feature-set for all-day comfort.

While my team and I haven't reviewed the B100, we have tested a wide range of Sihoo's office chairs, and they've always proved comfortable, adjustable, and well worth the relatively low asking price.

So, based on our experience with the brand, and the broad feature-set here, well-designed for providing all-day comfort for the eight-hour work day, there's no doubt in my mind that this ergonomic chair is the best budget pick in the early Prime Day sales right now.

Sihoo's B100 boasts a widened seat cushion, which more evenly spreads your weight across hips and thighs, flip-up armrests, and an accommodating, height-adjustable headrest.

Elsewhere, you'll find seat height control, three reclining positions at 110°, 125°, and 135°, with support for up to 300lb weight.

But it's that adaptive lumbar support - sometimes called dynamic lumbar support - that really seals the deal for me here. It's effectively self-adjusting, so when you shift your weight or position, it continues to provide support.

In the office chair world, you can expect to pay at least double the asking price for a seat with adaptive lumbar support - the excellent FlexiSpot C7 is one of the cheapest examples we've tested, and that's priced around the $350-mark. So, for $160 office chair like the Sihoo B100 to offer it is an exceptionally good deal.

For more top picks, check out my guide to the best office chairs.

Also consider: More Sihoo office chair deals

Sihoo Doro C300 Ergonomic Office Chair
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Sihoo Doro C300 Ergonomic Office Chair: was $349.99 now $289.99 at Amazon

If you have the budget, the Doro C300 is an exceptional office chair with more adjustability than the B100. We tested this one and found it very breathable and comfortable for all-day sitting in our review.

Sihoo  M57 Ergonomic Mesh Office Chair
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Sihoo M57 Ergonomic Mesh Office Chair: was $239.88 now $189.97 at Amazon

There's a lot I like about Sihoo's M57, including the adjustable lower back support, 3D armrests, and 330lb weight limit. However, it's more expensive than the B100 right now, and there's no adaptive lumbar cushioning here, so I'd 100% opt for the B100 for improved comfort.

Sihoo  M18 Ergonomic Office Chair
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Sihoo M18 Ergonomic Office Chair: was $169.99 now $146.99 at Amazon

The M18 from Sihoo is a solid budget office chair that typically hovers around this price anyway. It's nicely designed, has all the core features. But I'd still recommend the B100 over this one due to the better lumbar support. For the sake of less than $15, it's worth the extra.

Steve Clark
B2B Editor - Creative & Hardware

Steve is B2B Editor for Creative & Hardware at TechRadar Pro, helping business professionals equip their workspace with the right tools. He tests and reviews the software, hardware, and office furniture that modern workspaces depend on, cutting through the hype to zero in on the real-world performance you won't find on a spec sheet. He is a relentless champion of the Oxford comma.

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