This SIHOO B100 Pro review looks at a mesh office chair built to shift between focused desk work and reclining breaks.
Its adaptive lumbar support, adjustable armrests and retractable footrest make it a feature-rich fit for a home office.
B100 Pro Chair Review Summary
The quick verdict

16,000+ ratings
Read Amazon ReviewsSIHOO B100 Pro
A mesh office chair with adjustable lumbar support, reclining positions and a retractable footrest for desk workers who want room to relax.
- Adaptive elastic lumbar support paired with a dual-back design that moves with the spine.
- Retractable footrest for stretching out during a break.
- 4D armrests adjust, rotate or flip; three recline angles are 110°, 125° and 135°.
- Full-mesh back and seat promote airflow.
Pros
- Lumbar support is designed to move with the spine as sitting posture changes.
- Retractable footrest adds a dedicated way to stretch out during breaks.
Consider before buying
- The chair’s support limit is up to 300 lbs, so buyers should check that against their requirements.
- The recline is organized around three set angles, which may not suit buyers who want a different range of reclining positions.
Read the full review summary
The B100 Pro’s appeal is its range of posture and comfort adjustments: elastic lumbar support moves with the spine, the 4D armrests adjust or flip out of the way, and three recline angles span work and rest positions.
A retractable footrest adds a place to stretch out during breaks, so the chair may suit people who want one seat for a home office and downtime.
The all-mesh seat and back are intended to promote airflow, while the widened cushion and wide 3D headrest add support features for long desk sessions.
A reinforced metal base and Class 4 SGS-certified gas lift have a stated support limit of 300 lbs; consider both the chair’s reclining setup and that capacity when deciding whether it fits your workspace and needs.
The buying factors
B100 Pro Chair Scorecard
Editorial scores reflect listed features and buyer fit; they are not laboratory measurements or customer ratings.
Posture adjustment
Elastic lumbar support moves with the spine, and three recline positions give the chair distinct work and break settings.
Armrest flexibility
The 4D armrests rotate and flip, offering several ways to accommodate posture or tuck the chair under a desk.
Break-time support
A retractable footrest and reclining positions are useful features for stretching out between work sessions.
Breathability features
Mesh covers both the back and seat, a layout intended to promote airflow during desk use.
Headrest and cushion
The chair pairs a widened cushion with a 3D ultra-wide headrest, addressing seat and neck support needs in its feature set.
Stated weight capacity
The stated capacity is up to 300 lbs, which gives buyers a concrete fit check before choosing the chair.
Key Features and Specifications of B100 Pro Chair
- Adaptive elastic lumbar support paired with a dual-back design that moves with the spine.
- Retractable footrest for stretching out during a break.
- 4D armrests adjust, rotate or flip; three recline angles are 110°, 125° and 135°.
- Full-mesh back and seat promote airflow.
- Widened seat cushion and 3D ultra-wide headrest.
- Reinforced metal base and Class 4 SGS-certified gas lift; support up to 300 lbs.
Pros and Cons of B100 Pro Chair
Pros
- Lumbar support is designed to move with the spine as sitting posture changes.
- Retractable footrest adds a dedicated way to stretch out during breaks.
- Armrests can adjust, rotate or flip to suit posture or desk clearance.
- Mesh on both the seat and back is intended to promote airflow.
Consider before buying
- The chair’s support limit is up to 300 lbs, so buyers should check that against their requirements.
- The recline is organized around three set angles, which may not suit buyers who want a different range of reclining positions.
- If you rely on a long warranty or easy returns in your purchasing decision, review the applicable terms before buying.
Who Should Buy B100 Pro Chair?
Good fit
Choose the B100 Pro if you want an office chair that can transition from upright desk work to reclined breaks. Its retractable footrest, three recline angles and adaptable lumbar design serve those uses directly.
It also makes sense for buyers who value a mesh seat and back, a wide headrest and armrests that can rotate or flip away.
Those features give the chair several adjustment options for desk use and room to tuck it beneath a desk.
Who should skip it
Skip it if its up-to-300-lb support limit does not meet your needs. The chair’s recline is set at three angles, so check that range against the positions you prefer before making it your daily seat.
B100 Pro Chair: How Its Adjustments Fit a Workday
Lumbar support that follows movement
The dual-back design is intended to move with the spine as the sitter leans forward, sits upright or changes position.
That makes the lumbar feature relevant to people who alternate between focused tasks and more relaxed postures, though individual fit will depend on the sitter and setup.
A seat for work and short breaks
Three fixed recline angles give the chair a defined transition from focused work toward a more relaxed position, and the retractable footrest supports stretching out.
Buyers seeking a chair for both desk tasks and breaks can weigh these features against their need for a particular recline range.
Mesh and cushioning for extended desk use
The mesh seat and back are designed to promote airflow, while the widened cushion spreads weight and the wide headrest supports the neck.
Taken together, those features target long periods at a desk; shoppers should still consider how the chair’s shape and mesh surface suit their own preferences.
Check the capacity and support terms
The chair is rated for support up to 300 lbs and includes 36-month coverage and 30-day easy returns. Check that capacity and the applicable coverage terms against your needs before committing to a chair for everyday use.
Alternatives to B100 Pro Chair
Home Office Desk Chairs alternative

16,000+ ratings
Read Amazon ReviewsSIHOO M18 Ergonomic Office Chair
Choose the M18 if adjustable back and headrest support with a 150kg capacity best fits your checklist; choose the B100 Pro if a retractable footrest and 4D armrests matter more for your desk breaks and posture changes.
- The M18 has adjustable seat height, headrest, lumbar and back support, plus a stated capacity of up to 150kg.
- The B100 Pro pairs a retractable footrest with 4D armrests that adjust, rotate or flip, making those features relevant for breaks and posture changes.
Home Office Desk Chairs alternative

16,000+ ratings
Read Amazon ReviewsSIHOO M57 Ergonomic Mesh Office Chair
Prefer the M57 if height- and depth-adjustable lumbar support, a split backrest and a waterfall-edge seat suit your desk priorities; favor the B100 Pro if its footrest and 135° recline position better fit your breaks.
- The M57 has lumbar support that adjusts in height and depth, a split backrest and a waterfall-edge seat designed to support the thighs.
- The B100 Pro combines a retractable footrest with three recline angles, including a 135° position, for work and reclining breaks.
Is B100 Pro Chair Worth It?
The SIHOO B100 Pro is worth considering if you want a mesh office chair that combines moving lumbar support and adjustable armrests with a retractable footrest for breaks.
Its three recline angles give it a clear work-to-relaxation role, while the mesh seat and back target airflow during desk use.
Before buying, make sure its up-to-300-lb support limit and three-angle recline fit your requirements.
For shoppers seeking a chair with both a desk posture and a place to stretch out, the B100 Pro’s feature mix offers a practical reason to shortlist it.
Your review at a glance

16,000+ ratings
Read Amazon ReviewsSIHOO B100 Pro
A mesh office chair with adjustable lumbar support, reclining positions and a retractable footrest for desk workers who want room to relax.
- Adaptive elastic lumbar support paired with a dual-back design that moves with the spine.
- Retractable footrest for stretching out during a break.
- 4D armrests adjust, rotate or flip; three recline angles are 110°, 125° and 135°.
- Full-mesh back and seat promote airflow.