Sihoo
Sihoo is an ergonomic furniture brand specializing in office chairs designed to provide adjustable support and comfort for people who spend extended periods working or studying at a desk. Established in 2011, the company develops ergonomic seating for home offices, professional workplaces, and other desk-based environments. Its product range includes mesh office chairs and other adjustable seating solutions with features such as lumbar support, headrests, armrests, reclining mechanisms, and seat adjustments that vary across individual models.
Research and development is a significant part of Sihoo’s approach to ergonomic furniture. The company has established an Ergonomics Innovation Application Base, an Ergonomics Testing Center, and the Sihoo Ergonomic Furniture Research Institute to support product design, testing, and development. Sihoo states that its ergonomic chairs are now distributed across more than 120 countries. By combining ergonomic research, adjustable seating features, and a broad range of chair designs, Sihoo aims to create office furniture suited to different working environments, body types, and everyday seating requirements.
Summary
Sihoo specializes in ergonomic office chairs designed for home and professional workspaces. Its products combine adjustable seating features with research and testing focused on ergonomics, comfort, durability, and support for extended periods of desk work.
Pros and Cons
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Strong comfort and ergonomic support at a fraction of premium chair prices
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Customer service frequently replaces parts or chairs even outside warranty
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Wide product range from entry-level to premium tiers
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Backed by genuine ergonomics research and industry standards involvement
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Shipping and dispatch delays are a recurring complaint, particularly on some regional storefronts
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Assembly instructions are sometimes criticized as unclear compared to competitors
Ideal For
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Remote workers wanting premium ergonomic support without the premium price

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Anyone sitting for long hours who needs genuine lumbar and posture support

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Shoppers comparing budget-to-mid-range ergonomic chairs

What's On Offer?
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Doro Series: Premium ergonomic chairs with advanced lumbar support

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Vito Series: Mid-range chairs balancing comfort and price

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Smart Series: Tech-integrated chairs, including the T6 Smart model

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Height-Adjustable Desks: Complementary ergonomic desk options

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Multi-Year Warranty: Typically 3 years, with some models covered longer

Help & Support
Sihoo offers customer support via email, and the team is notably active in resolving issues raised on Trustpilot, including replacing broken or missing parts, sending replacement chairs, and issuing full refunds when something goes wrong. The most common source of frustration isn’t support quality itself but response speed, particularly around shipping delays and, in a smaller number of cases, resolving more complex faulty-chair claims.
Sihoo
Bottom line
Choose Sihoo for genuinely strong ergonomic comfort at a price well below premium competitors, backed by a customer service team that consistently goes further than the standard warranty terms when something breaks. The Doro C300 in particular earns detailed, enthusiastic praise. Just budget some flexibility into your delivery timeline, since shipping delays show up often enough in reviews to be worth planning around, especially for orders outside the US.