REVIEW · 2026.05.27
SIHOO M59AS review: the budget office chair with the better fit range for taller users
The SIHOO M59AS is the better budget-office-chair recommendation when taller users need more usable backrest and arm adjustment than a basic task chair usually provides.
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The M59AS matters because it answers a common budget-chair failure: the chair looks ergonomic in a product image, then feels undersized once a taller person actually sits in it for a full workday.
That does not mean this is a premium chair disguised as a value pick. It means the M59AS at least puts its fit story in the right place: backrest support, armrest range, and a frame that does not feel immediately cramped.
What stands out on the spec sheet
Four details make this chair more interesting than the average budget listing:
- The dual-section backrest gives it a clearer upper-back support case than flatter task-chair designs.
- The 3D flip-up armrests give you more useful tuning range for desk height and shoulder position.
- The 135-degree recline is enough to vary posture during a longer day without turning the chair into a lounge seat.
- The 330-pound capacity is a stronger credibility signal than the vague fit language many competing chairs rely on.
The real tradeoff
The M59AS is not the chair to buy because it looks more dramatic. It is the chair to buy because the extra fit range is useful if you need it.
If you do not need that extra range, the simpler SIHOO B100 is often the cleaner recommendation. That is why this model works best as a more specific fit-driven purchase rather than a generic budget default.
When to buy it
Buy the M59AS when the average budget chair feels cramped in the shoulders or too short in the backrest. Skip it if your frame is more average and your real priority is the simplest under-$300 value.
For that broader money page, start with the best office chair for back pain under $300. If your search is body-type specific, this chair appears again in the roundup of the best ergonomic office chairs for tall people.
Bottom line
The M59AS is worth the extra look because it solves a more exact problem than most budget chairs admit exists. For taller users, that specificity is the whole point.
Check the SIHOO M59AS on Amazon (paid link) · price shown on Amazon