This SIHOO B100 Pro review looks at a mesh office chair built around adaptive lumbar support, a retractable footrest and multiple recline positions.
SIHOO B100 Pro Review Summary
The quick verdict

16,000+ ratings
Read Amazon ReviewsSIHOO B100 Pro
A reclining mesh chair with a footrest and adjustable lumbar support for buyers who want work and relaxation features in one seat.
- Adaptive elastic lumbar support with a dual-back design intended to move with the spine.
- Retractable footrest for stretching out during breaks.
- Four-dimensional armrests that adjust, rotate or flip, with a lockable recline.
- Three recline positions: 110°, 125° and 135°.
Pros
- Footrest and reclining positions support stretching out between work sessions.
- Dual-back lumbar support is designed to move with posture changes.
Consider before buying
- Buyers who prefer a cushioned upholstered seat may want to consider the feel of an all-mesh seat before choosing.
- The footrest and recline functions take up more of the chair's appeal for relaxation, so they may be unnecessary for buyers who want only a straightforward upright work seat.
Read the full review summary
The B100 Pro is a fit for a home office that doubles as a place to game or take breaks.
Its dual-back design is intended to move with the spine, while the retractable footrest and lockable recline offer a way to stretch out without leaving the chair.
The design also suits buyers who prefer mesh across the seat and back and want armrests that can adjust, rotate or flip.
It is a larger feature set aimed at people who change posture through the day; those seeking a simpler task chair may not need the lounge-oriented additions.
The buying factors
SIHOO B100 Pro Scorecard
Editorial scores reflect listed features and buyer fit; they are not laboratory measurements or customer ratings.
Lumbar support design
The dual-back structure and elastic lumbar support are intended to adapt as the sitter changes posture, a useful design focus for desk sessions that include leaning forward and sitting upright.
Recline flexibility
Three lockable recline angles make it possible to move between focused sitting and more relaxed breaks, though buyers should confirm the listed positions suit their preferred working posture.
Armrest positioning
The armrests adjust, rotate and flip, giving more ways to align them with a posture or move them out of the way beneath a desk.
Break-time features
A retractable footrest adds a place to stretch out, making the chair more oriented toward breaks and relaxation than a basic upright desk seat.
Breathable seating
Mesh covers both the back and seat to encourage airflow. Buyers who prefer a padded or upholstered seat may find this material choice less appealing.
Support capacity
The reinforced metal base and Class 4 SGS-certified gas lift are paired with a stated support limit of 300 lbs, a concrete fit criterion for shoppers checking capacity.
Key Features and Specifications of SIHOO B100 Pro
- Adaptive elastic lumbar support with a dual-back design intended to move with the spine.
- Retractable footrest for stretching out during breaks.
- Four-dimensional armrests that adjust, rotate or flip, with a lockable recline.
- Three recline positions: 110°, 125° and 135°.
- Full-mesh back and seat, plus a widened seat cushion and 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
- Footrest and reclining positions support stretching out between work sessions.
- Dual-back lumbar support is designed to move with posture changes.
- Armrests can be repositioned or flipped away to fit different desk setups.
- Mesh across both seat and back promotes airflow.
- The stated support capacity is 300 lbs, with a reinforced base and Class 4 gas lift.
Consider before buying
- Buyers who prefer a cushioned upholstered seat may want to consider the feel of an all-mesh seat before choosing.
- The footrest and recline functions take up more of the chair's appeal for relaxation, so they may be unnecessary for buyers who want only a straightforward upright work seat.
- Check the chair's fit at your desk and around your room before buying, especially if you plan to use the footrest while reclined.
Who Should Buy SIHOO B100 Pro?
Good fit
Choose the B100 Pro if your home office chair also needs to support relaxing breaks.
The retractable footrest and three recline positions are practical differentiators for stretching out after focused work or using the same seat for gaming and movie breaks.
It is also worth considering if you want mesh across both the seat and back, with lumbar support intended to follow posture changes.
Check that the 300 lbs support limit and the chair's dimensions work for your needs and workspace.
Who should skip it
Skip this chair if a fabric or upholstered seat is a firm preference; the B100 Pro uses mesh on both the seat and back.
It is also a less natural fit if you do not expect to use reclining or footrest features and want a simpler desk chair.
SIHOO B100 Pro Chair Analysis
Lumbar support and posture changes
The dual-back construction is intended to move with the spine, and the lumbar support is described as elastic.
That makes changing positions a central part of the chair's design, but it does not remove the need to check whether the seat and back fit your body and desk.
Recline and footrest for breaks
The combination of a retractable footrest and lockable recline gives the chair a break-time role as well as a work role.
Those features are most useful if you have room to extend the footrest and expect to recline; they add less value when the chair stays upright at a desk.
Mesh, cushion and headrest
The full-mesh seat and back prioritize airflow, while the widened cushion and ultra-wide headrest add contact points for longer desk sessions.
Since comfort depends on personal fit and preference, buyers should consider whether mesh and the headrest's shape suit how they sit.
Capacity and support details
The chair pairs a reinforced metal base with a Class 4 SGS-certified gas lift and a stated capacity up to 300 lbs.
Buyers should use that ceiling as a fit check and consider their own workspace needs before deciding.
Alternatives to SIHOO B100 Pro
Home Office Desk Chairs alternative

16,000+ ratings
Read Amazon ReviewsSIHOO M18 Ergonomic Office Chair
Pick the M18 if adjustable back support and its 150kg capacity align with your needs; choose the B100 Pro if a retractable footrest and four-dimensional armrests matter more for breaks and posture options.
- The M18 has adjustable seat height, headrest, lumbar and back support, plus capacity up to 150kg.
- Its mesh back makes it a reasonable fit for someone looking for an adjustable mesh work chair without prioritizing a footrest.
- The B100 Pro combines a retractable footrest, four-dimensional armrests and a dual-back lumbar design that moves with the spine.
Is SIHOO B100 Pro Worth It?
The SIHOO B100 Pro is worth considering if you want a mesh office chair that can also serve as a reclining break seat. Its dual-back lumbar design, retractable footrest and adjustable armrests give it a clear work-and-relaxation focus.
Buy it when those extras match your routine and the 300 lbs support limit suits your requirements.
Pass if you strongly prefer an upholstered seat or would not use the recline and footrest; mesh seating and personal fit remain key considerations.
Your review at a glance

16,000+ ratings
Read Amazon ReviewsSIHOO B100 Pro
A reclining mesh chair with a footrest and adjustable lumbar support for buyers who want work and relaxation features in one seat.
- Adaptive elastic lumbar support with a dual-back design intended to move with the spine.
- Retractable footrest for stretching out during breaks.
- Four-dimensional armrests that adjust, rotate or flip, with a lockable recline.
- Three recline positions: 110°, 125° and 135°.