This SIHOO B100 review looks at an office chair built around adaptive lumbar support, a wide headrest and recline options for everyday desk work.
SIHOO B100 Review Summary
The quick verdict

16,000+ ratings
Read Amazon ReviewsSIHOO B100
The SIHOO B100 suits desk workers seeking adaptive lumbar support, reclining positions and flip-up arms, with no footrest for stretching out.
- Elastic dynamic lumbar support uses a dual-back design that follows the natural curve and moves with the user.
- Three recline angles: 110°, 125° and 135°.
- Extra-wide 2D headrest and flip-up armrests that adjust with recline and tuck under a desk.
- Full-mesh design and widened cushion for airflow and more even weight distribution.
Pros
- Adaptive dual-back lumbar support is designed to follow the user's natural curve.
- Three recline angles accommodate different work and break positions.
Consider before buying
- There is no footrest, so it is less suited to buyers who want to stretch out in a reclined position.
- The recline choices are three set angles, which may not suit buyers wanting a wider range of positioning.
Read the full review summary
The SIHOO B100 combines an adaptive dual-back lumbar design with three recline angles, a wide 2D headrest and armrests that flip up under a desk.
Its full-mesh construction and widened cushion give it a practical feature set for regular work sessions, especially where desk clearance matters.
It is a sensible fit for people who want lumbar support and a few defined posture changes during the day, without adding a footrest.
The chair supports up to 300 lbs and includes a 3-year warranty, though buyers seeking a place to extend their legs during breaks should consider that design limitation.
The buying factors
SIHOO B100 Scorecard
Editorial scores reflect listed features and buyer fit; they are not laboratory measurements or customer ratings.
Lumbar support design
The elastic dynamic lumbar support uses a dual-back design intended to follow the user's natural curve while allowing movement.
Recline flexibility
Three set recline angles give users distinct positions for focused work and relaxed breaks.
Head and arm adjustment
A wide 2D headrest and flip-up arms provide useful adjustment and desk-tucking flexibility.
Breathable construction
Full mesh across the chair promotes airflow, a practical feature for long desk sessions.
Weight capacity
The stated capacity is up to 300 lbs, giving buyers a clear point to compare with their own requirements.
Warranty coverage
A 3-year warranty and 30-day easy returns add a defined support window to the purchase.
Key Features and Specifications of SIHOO B100
- Elastic dynamic lumbar support uses a dual-back design that follows the natural curve and moves with the user.
- Three recline angles: 110°, 125° and 135°.
- Extra-wide 2D headrest and flip-up armrests that adjust with recline and tuck under a desk.
- Full-mesh design and widened cushion for airflow and more even weight distribution.
- Supports up to 300 lbs; tested to meet SGS and BIFMA standards.
- Includes a 3-year warranty and 30-day easy returns.
Pros and Cons of SIHOO B100
Pros
- Adaptive dual-back lumbar support is designed to follow the user's natural curve.
- Three recline angles accommodate different work and break positions.
- Flip-up armrests can tuck under a desk, helping with compact setups.
- Full mesh promotes airflow, while the widened cushion spreads weight more evenly.
- A 3-year warranty and 30-day easy returns provide defined purchase support.
Consider before buying
- There is no footrest, so it is less suited to buyers who want to stretch out in a reclined position.
- The recline choices are three set angles, which may not suit buyers wanting a wider range of positioning.
- Check that the chair's 300 lb capacity matches your needs before buying.
Who Should Buy SIHOO B100?
Good fit
Choose the SIHOO B100 if you want an office chair with adaptive lumbar support, three recline angles and armrests that can flip up and tuck beneath a desk.
That combination makes it a practical option for a workstation where chair clearance matters.
It may also suit people who prefer mesh construction and want a wide headrest and widened cushion for daily desk work. Its 3-year warranty and 30-day easy returns offer a clear support period to weigh alongside its features.
Who should skip it
Skip this model if a built-in footrest is central to how you plan to use a chair. The B100 is explicitly a chair without a footrest, so it does not provide that option for stretching out during breaks.
Look elsewhere if your required weight capacity exceeds 300 lbs; the B100's stated support is up to that limit.
SIHOO B100: Support and Setup in Daily Use
Adaptive back support
The dual-back lumbar system is intended to move with the user's spine and support without restricting movement.
That makes the chair worth considering for people who shift between leaning forward and sitting upright, while individual fit will still depend on how the chair aligns with their body.
Recline and desk clearance
Three recline angles cover a work position and more relaxed breaks, while flip-up arms can tuck beneath a desk.
Together, these details suit a setup that needs both posture changes and room to push the chair closer to the work surface.
Materials for longer sessions
The full-mesh design is intended to keep air moving, and the widened cushion spreads weight more evenly.
These features make the chair a reasonable candidate for routine desk work, although they do not guarantee personal comfort over a full day.
Capacity and after-sale terms
The chair supports up to 300 lbs and has a 3-year warranty with 30-day easy returns. Check the capacity against your needs, and review the return terms before purchase so the support window fits your expectations.
Alternatives to SIHOO B100
Home Office Desk Chairs alternative

16,000+ ratings
Read Amazon ReviewsSIHOO M18 Ergonomic Office Chair
Consider the M18 if adjustable back support and its stated height range are priorities; choose the B100 if you prefer its three recline angles, flip-up arms and stated 300 lb capacity.
- The M18 provides adjustable headrest, lumbar and back support and gives a suitable height range of 5'6" to 6'2". Its stated support capacity is up to 150kg.
- The B100 offers three recline angles and flip-up armrests, with a widened cushion and capacity up to 300 lbs. Its adaptive lumbar support moves with the user.
Home Office Desk Chairs alternative

16,000+ ratings
Read Amazon ReviewsSIHOO B100 Pro Ergonomic Office Chair
Prefer the B100 Pro if a retractable footrest and more adjustable armrests matter for breaks and posture changes; stick with the B100 if a footrest is unnecessary and its flip-up arms meet your setup needs.
- The B100 Pro adds a retractable footrest, 4D armrests and a 3D wide headrest, while retaining adaptive lumbar support and three recline angles.
- The B100 has adaptive lumbar support and three recline angles, alongside flip-up arms and an extra-wide 2D headrest. It has no footrest.
Is SIHOO B100 Worth It?
The SIHOO B100 is worth considering if your priorities are adaptive lumbar support, three recline angles, breathable mesh and arms that flip up for desk clearance.
Its widened cushion and 300 lb capacity round out a practical everyday office-chair feature set.
It is a weaker fit if you need a footrest or require capacity above 300 lbs.
If those limits align with your needs, the combination of movement-oriented lumbar support, defined recline positions and a 3-year warranty makes the B100 a reasonable choice for day-to-day desk work.
Your review at a glance

16,000+ ratings
Read Amazon ReviewsSIHOO B100
The SIHOO B100 suits desk workers seeking adaptive lumbar support, reclining positions and flip-up arms, with no footrest for stretching out.
- Elastic dynamic lumbar support uses a dual-back design that follows the natural curve and moves with the user.
- Three recline angles: 110°, 125° and 135°.
- Extra-wide 2D headrest and flip-up armrests that adjust with recline and tuck under a desk.
- Full-mesh design and widened cushion for airflow and more even weight distribution.