SIHOO B100 Pro Ergonomic Office Chair, Office Chair with Adaptive Lumbar Support, Computer Chair with Dual-Back, Desk Chair with 360° Rotatable & Flip-Up Armrests, 3D Wide Headrest, Light Grey

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ADAPTIVE DYNAMIC LUMBAR SUPPORT — Long hours at your desk shouldn’t leave your lower back aching. The SIHOO B100 ergonomic office chair features elastic lumbar support with a dual-back design that moves with your spine. Lean forward to focus, sit upright in meetings, or shift positions throughout the day—this desk chair adapts with you, keeping your back supported and comfortable without feeling stiff. RETRACTABLE FOOTREST FOR FULL RELAXATION — Pull out the smooth footrest and stretch out fully. Lean back, relax, and transform this computer chair into a personal lounge for quick power naps, gaming sessions, or movie breaks after work. Comfort follows your every move. 4D ARMRESTS & LOCKABLE RECLINE — Adjust, rotate, or flip the 4D armrests to fit your posture or slide neatly under your desk. Three recline angles (110° / 125° / 135°) let this office chair shift effortlessly from focused work to relaxing breaks—perfect for home offices, gaming, or long study sessions. PLUSH CUSHION & ULTRA-WIDE HEADREST — The widened seat cushion spreads weight evenly for lasting comfort. The 3D ultra-wide headrest supports your neck naturally, keeping shoulders relaxed during typing, calls, or video conferences. Sit longer, stay supported, and feel the difference in every hour at your desk. BREATHABLE MESH THAT WORKS AS HARD AS YOU DO — The full-mesh back and seat promote airflow, keeping you cool through long workdays or late-night gaming. Supportive yet breathable, this mesh office chair prevents overheating and delivers consistent comfort all day. BUILT STRONG, BUILT QUIET — Reinforced metal base and Class 4 SGS-certified gas lift provide stable support up to 300 lbs. Smooth tilt control and quiet casters glide across any floor without noise—ideal for shared spaces or late-night work sessions. TRUSTED QUALITY & WORRY-FREE SUPPORT — Tested to meet SGS and BIFMA standards, the SIHOO B100 ergonomic office chair is built for long-term durability and daily performance. Backed by a 36-month coverage and 30-day easy returns, you can order your desk chair with confidence. Our dedicated support team responds within 24 hours to resolve issues—ensuring your experience remains smooth, secure, and stress-free.