Sihoo B100 Ergonomic Office Chair With Flip-Up Armrest
Benefits
Benefits
- Targeted sacral support helps stabilize your posture from the base up
- Breathable pressure-relief mesh keeps you cool through long seated hours
- 3-position recline up to 135° makes it easy to switch from focus to reset
- A wide 2D headrest gives your neck and head a more comfortable place to rest
- Flip-up armrests help save space and fit smaller work setups
- Ergonomic seat shaping reduces pressure on the hips, thighs, and behind the knees
- Class 4 gas lift and tested materials support everyday durability and peace of mind
- Thoughtful ergonomic comfort at a more accessible price point
Promises
Promises
- 30-Day Free Returns.: Try the chair for 30 days. If it’s not for you, feel free to return it.
- 3-Year Warranty: Enjoy lasting comfort and peace of mind with our 3-year warranty.
- Free Shipping: Receive your chair in just 5-7 days, in US and CA.
- Satisfaction Guarantee: For any issues, contact support_us@sihoo.com for prompt assistance and guaranteed satisfaction.
Payment methods
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How to choose a right ergonomic office chair?
Check out our buying guide for you!
Targeted Sacral Support:
Unlike chairs that only focus on the lower back, the Sihoo B100 is designed to support the sacrum—the foundation of healthy sitting posture. By helping stabilize the pelvis and support the natural S-curve of the spine, it promotes better alignment and reduces fatigue during long hours at your desk.
Floating Sacral Cushion Design:
The B100’s floating sacral support is built to feel responsive yet supportive, staying comfortably aligned with your lower spine as you sit. This targeted support helps relieve strain where many chairs miss—making everyday sitting feel steadier, more upright, and more comfortable.
Breathable Pressure-Relief Mesh:
Engineered for airflow, flexibility, and lasting comfort, the B100’s breathable mesh helps keep heat from building up during long seated sessions. Its balanced support design helps distribute pressure more evenly, so you stay cool, supported, and comfortable throughout the day.
Ergonomic Waterfall Seat:
The seat is shaped with a waterfall-style front edge to help reduce pressure on the hips, thighs, and behind the knees. Combined with balanced support across the seating surface, it helps make long sitting sessions feel easier on the body.
3-Position Recline up to 135°:
Whether you’re working, taking a quick pause, or leaning back to reset, the B100 adapts to your day with three recline positions up to 135°. It’s a simple way to shift posture, release tension, and stay more comfortable between tasks.
Wide 2D Adjustable Headrest:
The wide 2D headrest gives your head and neck a more secure place to rest, with adjustable positioning to help support you whether you're sitting upright or reclining. It’s designed to make long work sessions and short breaks feel more comfortable.
Flip-Up 2D Armrests:
The 2D armrests provide practical support for your elbows and forearms while you work, study, or game. When you need more room, simply flip them up to slide the chair neatly under your desk—perfect for smaller spaces and flexible setups.
Class 4 Gas Lift & Everyday Durability:
Built for dependable daily use, the B100 features a Class 4 gas lift, durable frame construction, and tested materials designed to support up to 330 lbs. Certified by BIFMA, SGS, and TÜV, it’s made to deliver reliable ergonomic comfort you can trust.
Key Features
Support Starts at the Sacrum
Recline, Lock, and Reset
Wider Head & Neck Comfort
Tucks Away Under Your Desk
Support Starts at the Base of Your Spine
Most chairs focus only on the lower back. The B100 goes lower—using targeted sacral support to help stabilize your pelvis, encourage a healthier S-shaped posture, and reduce fatigue during long hours at your desk.
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3 Recline Angles to Suit Your Day
Recline up to 135° and extend the footrest for more complete leg support—ideal for quick resets between tasks or a more comfortable midday break.
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Designed for Work, Pause, and Reset
Lock the backrest into three recline positions to match the moment—upright when you need focus, slightly reclined when you want less pressure, or leaned back when it’s time to recharge.
Fits Better in Smaller Spaces
Flip the armrests up and slide the chair neatly under your desk when you're done. It’s a simple feature that makes a big difference in apartments, shared rooms, and tighter work setups.
Pressure Relief That Feels Better Over Time
The ergonomic seat is shaped to distribute pressure more evenly across your hips and thighs, helping reduce concentrated pressure points and easing strain behind the knees during long sitting sessions.
Specifications
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Overview
Designed to bring thoughtful ergonomic support into everyday work, the Sihoo B100 is built for comfort that feels better hour after hour. With targeted sacral support, breathable materials, and practical adjustability, it helps you sit better without overcomplicating your setup.
Name: B100 Ergonomic Chair
General Dimensions: 27.6"W x 28.3"D x 44.1"-51.6"H
Product Weight: 36.4 lbs
Assembly: Requires assembly
Materials: Mesh, Plastic, Steel
Maximum Load: 330 lbs
Warranty: (3) years warranty -
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