B100 Ergonomic Breathable Mesh Chair Lumbar Support

Stay supported as your workday shifts from focused typing to meetings and study breaks. The SIHOO B100 ergonomic office chair has dynamic lumbar support that follows your spine’s natural curve as you change posture.

Set it up at your desk, adjust the headrest for typing or calls, then lean back when it’s time to pause. Its breathable mesh and widened seat make it suited to long work sessions, exam study, or gaming after hours.

• Adaptive lumbar support: Moves with your posture to support your lower back without feeling stiff or forced.
• Adjustable fit: Set the seat height from 18.3 to 21.9 inches, and position the adjustable headrest for neck support.
• Three recline angles: Lock the chair at 110°, 125°, or 135° to shift between upright work and a relaxed break.
• Breathable mesh back: The full-mesh backrest allows air to circulate, helping you stay cooler during extended sitting.
• Widened seat cushion: Spreads weight more evenly across your hips and thighs for balanced sitting comfort.
• Stable, quiet movement: A reinforced metal base and SGS-certified Class 4 gas lift support up to 300 lbs; smooth tilt control and quiet casters help limit distracting noise.
• Quality and support: Built to meet SGS and BIFMA standards, with 36-month coverage, 30-day easy returns, and support responses within 24 hours.

Settle into a quieter workspace for a late-night task or a shared office, with room to shift between sitting upright and reclining.