This SIHOO B100 Pro review looks at a mesh office chair built around adaptive lumbar support, adjustable armrests and a retractable footrest. It may suit home workers who want seating for focused desk time and occasional reclining breaks.
B100 Pro Chair Review Summary
The quick verdict

16,000+ ratings
Read Amazon ReviewsSIHOO B100 Pro
A mesh office chair with adaptive lumbar support and a retractable footrest for buyers who want flexible desk seating and room to recline.
- Dual-back design with elastic, adaptive lumbar support.
- Four-dimensional armrests adjust, rotate or flip up.
- Three recline angles: 110°, 125° and 135°.
- Full-mesh back and seat promote airflow.
Pros
- Several lumbar and armrest adjustments for changing desk postures.
- Three recline angles give you options for shifting away from an upright work posture.
Consider before buying
- The footrest and recline features make the chair more involved than a basic upright desk seat; consider whether you will use them enough to justify choosing this setup.
- The support limit is 300 lbs, so buyers should compare that ceiling with their requirements.
Read the full review summary
The B100 Pro pairs a breathable mesh back with a widened cushion, dual-back lumbar support and a 3D wide headrest. Consider it if you want airflow and adjustable support features for desk work, calls or study sessions.
The chair offers three recline angles, adjustable and rotating 4D armrests that flip up, and a pull-out footrest for stretching during a relaxed break.
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
Adaptive lumbar support, a dual-back design and four-dimensional armrests give buyers several ways to adjust seating for different desk postures.
Recline flexibility
Three recline angles provide options for focused work and breaks.
Break comfort features
A retractable footrest and wide headrest add support options when leaning back to relax.
Breathable materials
Mesh covers both the back and seat, which promotes airflow for buyers who prefer a more ventilated chair surface.
Weight capacity
The stated support limit is 300 lbs, giving a defined capacity to compare with your needs before purchase.
Build and support terms
The chair has a reinforced metal base, a Class 4 SGS-certified gas lift and 36-month coverage, though coverage terms should be checked for your situation.
Key Features and Specifications of B100 Pro Chair
- Dual-back design with elastic, adaptive lumbar support.
- Four-dimensional armrests adjust, rotate or flip up.
- Three recline angles: 110°, 125° and 135°.
- Full-mesh back and seat promote airflow.
- A retractable footrest and 3D wide headrest support reclining breaks.
- Reinforced metal base and Class 4 gas lift; support limit up to 300 lbs.
Pros and Cons of B100 Pro Chair
Pros
- Several lumbar and armrest adjustments for changing desk postures.
- Three recline angles give you options for shifting away from an upright work posture.
- Footrest and wide headrest add features for reclining breaks.
- Mesh on the seat and back promotes airflow.
Consider before buying
- The footrest and recline features make the chair more involved than a basic upright desk seat; consider whether you will use them enough to justify choosing this setup.
- The support limit is 300 lbs, so buyers should compare that ceiling with their requirements.
- If you work in a shared space or late at night, consider whether the chair's quiet casters suit your needs.
Who Should Buy B100 Pro Chair?
Good fit
Consider the B100 Pro if you want dual-back lumbar support, a breathable mesh back, and armrests that adjust, rotate or flip up. Its pull-out footrest and three recline angles offer options for stretching or relaxing during breaks.
It is also worth considering if your preferred seating style includes a headrest and a widened cushion.
The specified capacity is up to 300 lbs, so check that limit along with your desk clearance and room layout before deciding.
Who should skip it
Skip this design if you want a simple upright chair and have little use for reclining or stretching breaks; it includes a pull-out footrest and offers three recline angles.
Look elsewhere if your needs exceed the stated 300 lbs support limit.
SIHOO B100 Pro Chair: How Its Adjustments Fit a Workday
Lumbar support and posture changes
A dual-back construction with elastic lumbar support is intended to move with posture changes, which may appeal to people who alternate between leaning forward, sitting upright and shifting during work.
The four-dimensional armrests add adjustability around the arms and desk position.
Reclining for breaks
The pull-out footrest and three recline angles make the chair suited to stretching or relaxing breaks. The armrests also flip up, offering another positioning option; their value depends on how often you recline at your desk.
Mesh, cushioning and airflow
Mesh spans both the seat and back, while the cushion is widened and the headrest is 3D and ultra-wide. That combination gives buyers mesh coverage plus several contact-point adjustments to weigh against their preferred seat feel.
Capacity and day-to-day setup
The chair's support limit is up to 300 lbs, and it uses a reinforced metal base with a Class 4 SGS-certified gas lift.
Check the capacity and fit against your own requirements; the stated build details do not replace checking dimensions and workspace clearance before purchase.
Alternatives to B100 Pro Chair
Home Office Desk Chairs alternative

16,000+ ratings
Read Amazon ReviewsSIHOO M18 Ergonomic Office Chair
Choose the M18 if its adjustable support features and 150kg capacity fit your needs; prefer the B100 Pro if you want its retractable footrest and 4D armrests for stretching and more positioning options.
- The M18 offers adjustable seat height, headrest, lumbar support and back support, with a support capacity up to 150kg.
- The B100 Pro pairs adaptive lumbar support with a retractable footrest and 4D armrests, suiting buyers who want more ways to recline and reposition at the desk.
Is B100 Pro Chair Worth It?
The SIHOO B100 Pro is worth considering if you want a mesh office chair with adaptive lumbar support and options for reclining breaks. Its key features include flip-up 4D armrests, a retractable footrest and three recline angles.
Buy it if those adjustments match your work routine and the 300 lbs support limit suits your needs. If you rarely recline or prefer a simpler desk chair, the footrest and multiple-angle setup may be unnecessary extras.
Your review at a glance

16,000+ ratings
Read Amazon ReviewsSIHOO B100 Pro
A mesh office chair with adaptive lumbar support and a retractable footrest for buyers who want flexible desk seating and room to recline.
- Dual-back design with elastic, adaptive lumbar support.
- Four-dimensional armrests adjust, rotate or flip up.
- Three recline angles: 110°, 125° and 135°.
- Full-mesh back and seat promote airflow.