SIHOO B100 Ergonomic Office Chair – Lumbar Support, Mesh Desk Chair with Adjustable Headrest, Swivel Seat for Home Office & Gaming

• Dynamic Lumbar Support That Moves With You – This ergonomic office chair features self‑adjusting lumbar that flexes as you lean forward or recline. Say goodbye to back pain during long workdays, home office, or intense gaming sessions. (3 recline angles: 110° for focus, 123° for chat, 135° for full relaxation.)
• Highly Breathable Wave Mesh – Full mesh back and seat resist wear, heat, and UV while allowing constant airflow. Stay cool and sweat‑free even after 10+ hours – perfect for a computer chair or desk chair used daily.
• Certified Safety & Heavy‑Duty Build – Class‑4 SGS gas lift (120,000 cycles) and BIFMA steel base support up to 120kg / 265 lbs. No fear of sudden drops – true heavy duty office chair reliability.
• Silent PU Casters & Space‑Saving Armrests – 6cm oversized PU wheels roll noise‑free on hardwood, tile, or carpet without scratching floors. Flip‑up 2D armrests slide neatly under your desk – ideal for compact home offices.
• Fully Adjustable + 3‑Year Warranty – 11‑position headrest (45° rotation), 2D armrests (up/down & angle), seat height from 46.5cm to 55.5cm. Fits users from 5'1" to 6'1". Backed by a 3‑year warranty and 24h customer support – buy with confidence.

SIHOO B100 Ergonomic Office Chair – Lumbar Support, Mesh Desk Chair with Adjustable Headrest, Swivel Seat for Home Office & Gaming