This SIHOO B100 Pro review looks at an office chair built for buyers who move between focused desk work and relaxed breaks.
Its adaptive lumbar support, reclining positions and retractable footrest make it a feature-rich option for a home office.
SIHOO B100 Pro Review Summary
The quick verdict

16,000+ ratings
Read Amazon ReviewsSIHOO B100 Pro
A flexible desk chair for buyers who want adaptive back support, reclining positions and a footrest for breaks at home.
- Adaptive elastic lumbar support with a dual-back design that moves with the spine.
- Retractable footrest for stretching out during breaks.
- Four-dimensional armrests that adjust, rotate or flip.
- Three lockable recline angles: 110°, 125° and 135°.
Pros
- The footrest and reclining positions give breaks a more lounge-like setup.
- Adaptive lumbar support and a dual-back design accommodate shifting between sitting positions.
Consider before buying
- The feature-rich reclining setup calls for enough room to extend the footrest and lean back.
- Buyers who need a close fit should check the chair's dimensions and adjustability against their body and desk before ordering.
Read the full review summary
The B100 Pro centers on an adaptive dual-back design, a retractable footrest and adjustable armrests.
That combination suits a desk setup where the chair also serves for reading, gaming or short rest breaks, and where changing posture matters as much as sitting upright.
Its mesh seat and back, wide headrest and widened cushion add features aimed at longer desk sessions.
The chair may be a good fit for buyers who want those adjustments in one package, while its larger feature set makes it sensible to check the space available under and around the desk before choosing it.
The buying factors
SIHOO B100 Pro Scorecard
Editorial scores reflect listed features and buyer fit; they are not laboratory measurements or customer ratings.
Posture adjustment
Adaptive lumbar support and a dual-back design are geared toward movement between forward-focused and upright sitting positions.
Reclining flexibility
Three lockable recline angles give the chair distinct working and resting positions.
Armrest adjustment
The four-dimensional armrests can be adjusted, rotated or flipped to suit posture or slide under a desk.
Break-time support
A retractable footrest supports stretching out during gaming, movie breaks or a short rest.
Breathable construction
Mesh covers both the seat and back, a useful design choice for buyers who prefer an airy chair surface.
Weight capacity
The stated capacity is up to 300 lbs, paired with a reinforced metal base and Class 4 gas lift.
Key Features and Specifications of SIHOO B100 Pro
- Adaptive elastic lumbar support with a dual-back design that moves with the spine.
- Retractable footrest for stretching out during breaks.
- Four-dimensional armrests that adjust, rotate or flip.
- Three lockable recline angles: 110°, 125° and 135°.
- Full-mesh seat and back, plus a widened cushion and a 3D ultra-wide headrest.
- Reinforced metal base and Class 4 SGS-certified gas lift, with support up to 300 lbs.
Pros and Cons of SIHOO B100 Pro
Pros
- The footrest and reclining positions give breaks a more lounge-like setup.
- Adaptive lumbar support and a dual-back design accommodate shifting between sitting positions.
- Armrests offer several ways to adjust positioning and can flip up under the desk.
- Mesh across the seat and back promotes airflow, and the headrest is described as ultra-wide.
Consider before buying
- The feature-rich reclining setup calls for enough room to extend the footrest and lean back.
- Buyers who need a close fit should check the chair's dimensions and adjustability against their body and desk before ordering.
- The support figure is a maximum capacity, so buyers should keep their own needs within that limit.
Who Should Buy SIHOO B100 Pro?
Good fit
Choose the B100 Pro if you want a chair that can shift from desk work to relaxed breaks, with a retractable footrest and lockable reclining positions.
Those features give it a clear role in home offices that also serve for gaming or unwinding.
It also fits buyers who value configurable support: the adaptive lumbar system follows movement, while the four-dimensional armrests can be adjusted or flipped away when needed.
The full-mesh seat and back, widened cushion and ultra-wide headrest may appeal to people who want several comfort-oriented features together in one office chair.
Who should skip it
Skip it if you want a straightforward chair without a footrest or reclining setup; these features are central to the B100 Pro's work-and-break design.
If your desk area is tight, first confirm that you can pull out the footrest and recline without interfering with nearby furniture.
How the SIHOO B100 Pro Fits a Work-and-Rest Setup
Support that moves with you
The adaptive lumbar system and dual-back structure are intended to move with the spine as the sitter leans forward or sits upright.
Buyers who often change posture may value that approach; those seeking a fixed, highly prescriptive fit should check whether the adjustment style suits them.
A chair that makes room for breaks
The footrest and reclining mechanism create a more relaxed use case alongside desk work.
The chair can be set to three angles, so buyers can consider whether that range fits their preferred balance between upright focus and leaning back.
Mesh and contact points
Mesh spans both the seat and back, while the widened cushion and broad headrest add substantial contact areas.
That feature mix may suit buyers who prefer breathable chair materials and head support, though personal fit still depends on body shape and setup.
Setup and ownership details
The reinforced metal base and Class 4 gas lift are paired with a stated capacity up to 300 lbs.
The chair also includes 36-month coverage and 30-day easy returns; buyers can review the current terms and confirm the chair's fit before deciding.
Alternatives to SIHOO B100 Pro
Home Office Desk Chairs alternative

16,000+ ratings
Read Amazon ReviewsSIHOO M18 Ergonomic Office Chair
Choose the M18 if adjustable headrest and back support with a 150kg capacity match your priorities; choose the B100 Pro if a retractable footrest and four-dimensional armrests matter more for stretching out and changing arm position.
- The M18 offers seat-height, headrest, lumbar and back-support adjustment, and supports up to 150kg.
- The B100 Pro emphasizes a retractable footrest, four-dimensional armrests and reclining positions for buyers who want a broader range of relaxation-oriented adjustments.
Is SIHOO B100 Pro Worth It?
The SIHOO B100 Pro is worth considering if you want a home-office chair that combines adaptive lumbar support with a retractable footrest, several reclining positions and adjustable armrests.
Its mesh seat and back, wide headrest and widened cushion add further comfort-oriented features for daily desk use.
Consider another chair if you do not need the footrest and reclining features or cannot accommodate their movement around your desk.
For buyers who want posture flexibility and a place to stretch out between tasks, the B100 Pro brings those functions together with a stated capacity up to 300 lbs.
Your review at a glance

16,000+ ratings
Read Amazon ReviewsSIHOO B100 Pro
A flexible desk chair for buyers who want adaptive back support, reclining positions and a footrest for breaks at home.
- Adaptive elastic lumbar support with a dual-back design that moves with the spine.
- Retractable footrest for stretching out during breaks.
- Four-dimensional armrests that adjust, rotate or flip.
- Three lockable recline angles: 110°, 125° and 135°.