Ergonomic Mesh Office Chair, Adjustable Lumbar High Back Desk Chair 400lbs, 4D Flip-up Arms, 3 Tilt Backrest, 3D Headrest, PU Wheels, Swivel Rolling Computer Chair for Long Desk Work - Black

Sturdy, Snug Work Chair: Designed for long sessions exceeding 8 hours of desk work. Micro-adjust lumbar support, flip-up arms, and an adaptable headrest accommodate individuals from 5'5" to 6'2", extending comfort. BIFMA X5.1 certification confirms the reliability of its strong, long-lasting construction, delivering lasting advantages. Lumbar Micro-Adjust: Providing 2 inches of adjustable support across 8 levels, this lower back feature aligns precisely with the L1-L5 lumbar spine, decreasing lower back pressure by 50% and minimizing fatigue by distributing weight evenly. Larger, Cooler Seat: The expanded cushion (19.3"D x 20"W / 18.5"-22.05"H), made from exclusive Aerovith Mesh, ensures continuous cooling while boosting support by 30% and reducing pelvic pressure by 20%. Detail-Oriented: Wide, non-peeling soft armrests and a 90° flip-up feature combined with silent PU wheels, enabling it to roll smoothly under the desk to optimize your workspace without leaving marks on the floor. Flexible Head/Backrest: Adjust the headrest in both height and depth for customized head and neck support for people between 5'5" and 6'2". The backrest can be locked at 90, 110, or 125 degrees to match your varying focus needs throughout the day. Selecting the appropriate chair is crucial for extended comfort and steady productivity. Typically, each chair assembles conveniently in 30 minutes