This SIHOO B100 Pro review looks at a mesh office chair built around adaptive lumbar support, a retractable footrest, and several ways to adjust its seating position.
SIHOO B100 Pro Review Summary
The quick verdict

16,000+ ratings
Read Amazon ReviewsSIHOO B100 Pro
A flexible home office chair for buyers who want adjustable lumbar support, recline, and a footrest for breaks between focused work sessions.
- Adaptive elastic lumbar support uses a dual-back design intended to move with the spine.
- Retractable footrest provides a place to stretch out during breaks.
- Four-dimensional armrests can adjust, rotate, or flip; the chair offers recline angles of 110°, 125°, and 135°.
- Full-mesh back and seat promote airflow.
Pros
- Adaptive lumbar support is designed to move with changes in sitting posture.
- Footrest and recline angles support stretching out during breaks.
Consider before buying
- The footrest and recline add-ons make most sense for buyers who expect to use the chair for breaks, gaming, or other seated leisure as well as work.
- At up to 300 lbs, the stated capacity may not suit buyers who need a chair rated for a higher load.
Read the full review summary
The B100 Pro combines a dual-back design that moves with the spine, a retractable footrest, and four-dimensional armrests that adjust, rotate, or flip.
That mix suits a home office where one chair needs to accommodate focused desk work as well as reclining breaks.
Breathable mesh covers the back and seat, while the widened cushion and wide headrest add support across the chair’s main contact areas.
It is a plausible fit for people who value adjustability and a place to stretch out; buyers who need a chair primarily for upright desk work may not make as much use of the footrest and reclining features.
The buying factors
SIHOO B100 Pro Scorecard
Editorial scores reflect listed features and buyer fit; they are not laboratory measurements or customer ratings.
Lumbar adjustability
The adaptive dual-back support is designed to move with the spine through forward leaning, upright sitting, and position changes.
Recline and relaxation
A retractable footrest pairs with three recline positions, giving the chair a clear role during breaks as well as desk sessions.
Armrest flexibility
The armrests adjust, rotate, and flip, which may help with posture changes or clearing space under a desk.
Airflow design
Mesh spans both the back and seat, making airflow a central part of the chair’s construction.
Head and seat support
The widened cushion and ultra-wide headrest provide distinct support areas for sitting and reclining.
Weight capacity
The reinforced base and Class 4 gas lift support up to 300 lbs, a useful fit reference for buyers checking chair capacity.
Key Features and Specifications of SIHOO B100 Pro
- Adaptive elastic lumbar support uses a dual-back design intended to move with the spine.
- Retractable footrest provides a place to stretch out during breaks.
- Four-dimensional armrests can adjust, rotate, or flip; the chair offers recline angles of 110°, 125°, and 135°.
- Full-mesh back and seat promote airflow.
- The widened seat cushion and 3D ultra-wide headrest target seat and neck support.
- Reinforced metal base and Class 4 SGS-certified gas lift support up to 300 lbs.
Pros and Cons of SIHOO B100 Pro
Pros
- Adaptive lumbar support is designed to move with changes in sitting posture.
- Footrest and recline angles support stretching out during breaks.
- Armrests offer multiple positioning options, including flipping up to clear desk space.
- Mesh covers both the seat and back for airflow-focused construction.
Consider before buying
- The footrest and recline add-ons make most sense for buyers who expect to use the chair for breaks, gaming, or other seated leisure as well as work.
- At up to 300 lbs, the stated capacity may not suit buyers who need a chair rated for a higher load.
- For a desk setup where close-fitting armrests matter, check whether the armrest movement suits your desk and posture before buying.
Who Should Buy SIHOO B100 Pro?
Good fit
Choose the SIHOO B100 Pro if you want one chair to move between focused work and reclined breaks. Its footrest, three recline positions, and flexible armrests give buyers several ways to change posture through the day.
It also suits buyers who prefer mesh across both seat and back and want a headrest and lumbar design included in the chair’s support layout. The up-to-300-lb capacity gives another concrete fit point to check against your needs.
Who should skip it
Skip it if you need a chair rated above 300 lbs, since that is the stated maximum support capacity.
It may also be a poor match if you do not want a footrest or recline features and would rather avoid paying for seating functions you will not use.
SIHOO B100 Pro Review Analysis
Adaptive support for changing posture
The dual-back lumbar layout is intended to follow movement between leaning forward, sitting upright, and shifting position.
That makes the support concept relevant for people who alternate tasks, though fit is personal and the chair’s design alone cannot predict comfort for every body.
A chair with a break mode
The footrest changes the chair’s purpose beyond conventional desk seating: buyers can extend their legs and recline for a short rest or leisure session.
Consider whether that flexibility fits your room and routine, because the feature is most useful when you have space and intend to use it.
Airflow and contact points
Mesh across the back and seat supports an airflow-focused design, while the widened cushion and broad headrest address the areas that matter during longer sitting and reclining periods.
Buyers should still consider their own preferred seat feel and headrest position when deciding whether this layout fits.
Capacity and everyday setup
A reinforced metal base and Class 4 gas lift provide support up to 300 lbs. The quiet casters and tilt control are practical details for shared spaces, while the capacity is an important boundary for choosing the chair.
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 seat and back support with its up-to-150kg capacity better suit your needs; choose the B100 Pro if a retractable footrest and armrests with multiple positioning options matter more.
- The M18 offers adjustable seat height, headrest, lumbar support, and back support, plus a stated capacity of up to 150kg.
- The B100 Pro adds a retractable footrest and four-dimensional armrests that adjust, rotate, or flip, alongside its adaptive dual-back lumbar design.
Is SIHOO B100 Pro Worth It?
The SIHOO B100 Pro is worth considering if you want an adjustable mesh office chair that can also support reclined breaks.
Adaptive lumbar support, a retractable footrest, and three recline angles give it a clear use case for work and downtime in one seat.
It is a less compelling fit if you need a capacity above 300 lbs or will not use its footrest and reclining functions.
For buyers who will use those features, the B100 Pro brings together lumbar support, mesh seating, and flexible positioning in a single home-office chair.
Your review at a glance

16,000+ ratings
Read Amazon ReviewsSIHOO B100 Pro
A flexible home office chair for buyers who want adjustable lumbar support, recline, and a footrest for breaks between focused work sessions.
- Adaptive elastic lumbar support uses a dual-back design intended to move with the spine.
- Retractable footrest provides a place to stretch out during breaks.
- Four-dimensional armrests can adjust, rotate, or flip; the chair offers recline angles of 110°, 125°, and 135°.
- Full-mesh back and seat promote airflow.