4 Alternatives to the SIHOO M59AS Ergonomic Office Chair

CLOUVOU CleverSeat Ergonomic Office Chair is the strongest all-round alternative if you want the best-rated option here. Compared with the SIHOO M59AS, it has a higher user rating (4.8★ vs 4.2★) and a lower price at £219.99, so it looks better value on paper. Its biggest advantage is the “100% adjustable” design and 330lb weight capacity, which makes it a good pick for users who need a chair that feels more customisable and robust. The trade-off is that the branding is less established than SIHOO, so if you prefer a known ergonomic manufacturer, the M59AS may feel like the safer buy. Choose the CLOUVOU if you want the best balance of price, adjustability, and reviews.

SIHOO Ergonomic Office Chair Mesh Desk Chair with Adjustable Lumbar Support 3D Armrests is the closest like-for-like alternative. At £233.01, it sits almost on top of the M59AS in price, and the 4.3★ rating is slightly better. It keeps the SIHOO mesh-chair formula, so you’re still getting breathable seating, adjustable lumbar support, and 3D armrests — ideal if you work long UK office hours and want a chair that stays cool. Where it may lose out is differentiation: if you’re comparing the two, the M59AS’s dual-back design and adaptive dynamic lumbar may offer a more distinctive comfort feel. Pick this one if you want a familiar SIHOO chair but don’t specifically need the M59AS design.

SIHOO Doro C300 Ergonomic Office Chair is the premium alternative in this group. At £269.97, it costs more than the M59AS, but it matches it on rating (4.3★) and adds ultra-soft 3D armrests plus dynamic lumbar support. That makes it appealing for people who spend 8 to 10 hours a day at a desk and want a more refined seating experience. The downside is simple: it’s the most expensive option here, so unless you particularly value the softer armrests and upgraded feel, it may be hard to justify over the M59AS. Choose the Doro C300 if comfort is your top priority and budget is less of a concern.

TONFARY Ergonomic Office Chair is the value pick. At £199.99, it’s the cheapest option listed and still has a strong 4.6★ rating, plus useful features like a 130° tilt backrest, adjustable seat depth, and 3D armrests. Those details matter if you want a chair that can adapt to different sitting positions during the day, especially for mixed work and gaming use. It also supports up to 330 lbs, which is reassuring for heavier users. Compared with the M59AS, it may feel less premium in brand perception, but it gives you more features for less money. Choose TONFARY if you want maximum features per pound and don’t mind trying a less well-known name.