This SIHOO B100 Pro review looks at an ergonomic mesh chair built for desk work, with adaptive lumbar support and a retractable footrest for breaks.
SIHOO B100 Pro Review Summary
The quick verdict

16,000+ ratings
Read Amazon ReviewsSIHOO B100 Pro
A mesh office chair with adjustable lumbar support, a retractable footrest and reclining options for desk workers who want room to shift between focus and breaks.
- Dual-back design with adaptive, elastic lumbar support.
- Retractable footrest for stretching out during breaks.
- Four-dimensional armrests that adjust, rotate and flip up.
- Three recline angles: 110°, 125° and 135°.
Pros
- Footrest adds a built-in way to stretch out during breaks.
- Multiple recline positions and adjustable armrests suit varied sitting postures.
Consider before buying
- The footrest and recline function make the chair a larger-feature setup; check that your desk area has room for the chair to recline and extend its footrest.
- If you prefer a softer seat for longer sessions, consider whether the widened cushion suits your comfort needs.
Read the full review summary
The B100 Pro combines a dual-back design that moves with changing posture, four-dimensional armrests, and three lockable recline angles.
A retractable footrest gives it a rest-friendly setup for a home office that also serves as a gaming or movie space.
It is best suited to buyers who want a mesh chair with multiple adjustment points and a footrest built in.
The broad headrest and seat cushion add to its support-focused setup, while the stated 300-pound capacity gives a useful load reference when checking fit.
The buying factors
SIHOO B100 Pro Scorecard
Editorial scores reflect listed features and buyer fit; they are not laboratory measurements or customer ratings.
Lumbar and back support
The dual-back structure and adaptive lumbar support are designed to move with posture changes, which suits buyers who shift position during desk work.
Adjustment range
Rotating and flip-up 4D armrests pair with three recline angles, giving buyers ways to adjust their posture and relax.
Break-time support
A retractable footrest is a useful inclusion for stretching out during breaks, gaming sessions or movie time at home.
Breathable materials
Mesh covers both the back and seat, a design intended to promote airflow during extended desk sessions.
Head and seat design
The wider seat cushion and three-dimensional wide headrest focus on distributing seated support across the seat and neck area.
Capacity reference
The chair is rated for support up to 300 pounds, a concrete fit check for buyers comparing chair capacity with their needs.
Key Features and Specifications of SIHOO B100 Pro
- Dual-back design with adaptive, elastic lumbar support.
- Retractable footrest for stretching out during breaks.
- Four-dimensional armrests that adjust, rotate and flip up.
- Three recline angles: 110°, 125° and 135°.
- Full-mesh back and seat designed to promote airflow.
- Support capacity up to 300 pounds, with a reinforced metal base and Class 4 SGS-certified gas lift.
Pros and Cons of SIHOO B100 Pro
Pros
- Footrest adds a built-in way to stretch out during breaks.
- Multiple recline positions and adjustable armrests suit varied sitting postures.
- Mesh across the back and seat is intended to support airflow.
- The widened cushion and ultra-wide headrest emphasize seated support.
Consider before buying
- The footrest and recline function make the chair a larger-feature setup; check that your desk area has room for the chair to recline and extend its footrest.
- If you prefer a softer seat for longer sessions, consider whether the widened cushion suits your comfort needs.
Who Should Buy SIHOO B100 Pro?
Good fit
Choose the B100 Pro if your work chair also needs to support breaks at home. Its retractable footrest and three recline angles offer options for shifting from focused sitting to a more reclined position.
It also fits buyers who want adjustable arm positioning and mesh across both the back and seat. The dual-back lumbar design is aimed at adapting as posture changes, while the wide headrest and cushion add dedicated support surfaces.
Who should skip it
Skip it if you want a simpler task chair without a built-in footrest or recline-focused setup. Those features are central to the B100 Pro, so they may be unnecessary for a workspace dedicated only to upright desk work.
If your desk area cannot accommodate reclining or extending a footrest, this design may not suit the available space. Check the chair's fit around your desk before buying.
SIHOO B100 Pro Chair Analysis
Support that follows posture changes
The B100 Pro's dual-back arrangement is intended to move with the spine as the sitter leans forward, sits upright or shifts position. That makes its central appeal adaptable lumbar support, rather than a fixed back shape.
Buyers who prefer a single, uniform back panel may find the dual-back style less familiar.
A work chair with a lounge mode
The retractable footrest and lockable recline give the chair a clear role beyond upright computer work.
They can make short rests or entertainment breaks easier to accommodate in the same seat, provided there is enough space to recline and extend the footrest.
Mesh, cushion and headrest
Mesh on both the seat and back is intended to promote airflow, while the widened cushion and ultra-wide headrest address seat and neck support.
These design choices may appeal to buyers planning long sessions, though fit and personal comfort still depend on body shape and setup.
Capacity and day-to-day setup
A 300-pound support limit provides a direct capacity reference, and the reinforced metal base and Class 4 SGS-certified gas lift add detail to the chair's supporting structure.
If capacity is a deciding factor, compare that limit with your requirements before purchase.
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 height and back support with a 150kg capacity suit your priorities. Prefer the B100 Pro if a retractable footrest, four-dimensional armrests and lockable recline are more useful for your work-and-break routine.
- The M18 offers adjustable seat height, headrest, lumbar support and back support, plus mesh construction and support up to 150kg.
- Its listed configuration has 2D armrests and no footrest feature in the product information.
- The B100 Pro pairs adaptive dual-back lumbar support with a retractable footrest and four-dimensional armrests, making it a fit for buyers who want both posture adjustments and reclined breaks.
Is SIHOO B100 Pro Worth It?
The SIHOO B100 Pro is worth considering if you want a mesh office chair that combines adaptive lumbar support with a retractable footrest and several recline settings.
Those features suit a home workspace where the chair needs to handle both desk time and relaxed breaks.
The main tradeoff is that its relaxation-oriented features need room to recline and extend.
If your priority is a chair for upright work alone, the footrest and broad adjustment setup may be more than you need; otherwise, its combination of support features makes it a practical option to compare for a work-and-rest home office.
Your review at a glance

16,000+ ratings
Read Amazon ReviewsSIHOO B100 Pro
A mesh office chair with adjustable lumbar support, a retractable footrest and reclining options for desk workers who want room to shift between focus and breaks.
- Dual-back design with adaptive, elastic lumbar support.
- Retractable footrest for stretching out during breaks.
- Four-dimensional armrests that adjust, rotate and flip up.
- Three recline angles: 110°, 125° and 135°.