Ergonomic Mesh Office Chair, Adjustable Lumbar High Back Desk Chair 300lbs, 4D Flip-Up Arms, 3-Level Tilt Backrest, 3D Headrest, PU Wheels

Engineered for marathon work sessions of eight hours or more, this ergonomic mesh chair delivers comprehensive, full-body support through precision-tuned mechanics. The seat features an oversized 19.69" D x 20" W surface constructed from proprietary Aerovith mesh, a breathable material designed to sustain continuous airflow while increasing load distribution by 30% and reducing pelvic pressure by 20%, effectively eliminating heat buildup during prolonged sitting. A micro?adjustable lumbar system provides eight levels of two?inch adjustment, targeting the L1¨CL5 region to promote spinal alignment, offload up to 50% of lower?back pressure, and encourage a balanced, fatigue?reducing posture. The backrest offers three locked recline angles¡ª105¡ã, 120¡ã, and 125¡ã¡ªallowing seamless transition between focused work, relaxed engagement, and active breaks. Up top, a 3D headrest adjusts in both height and depth to deliver customized neck support tailored for users ranging from 5'5" to 6'2". Additional adaptability comes from 4D flip?up armrests that provide flexible positioning and can be folded entirely out of the way when needed. Beneath, a heavy?duty stainless steel base paired with a leak?proof SGS lift mechanism ensures smooth, secure height adjustments without sudden sinking, forming a stable foundation rated to support up to 400 lbs. Gliding on durable PU wheels, the chair offers effortless mobility across hard floors while maintaining a wobble?free stance reinforced by a structurally certified frame built for long?term reliability.
Parameters
Seat Dimensions: 19.69" D x 20" W, with proprietary Aerovith mesh construction for breathability and pressure relief
Lumbar Support: Micro?adjustable system with eight levels and 2" range, targeting L1¨CL5 region to reduce lower?back pressure by up to 50%
Backrest Recline: Three locking positions at 105¡ã, 120¡ã, and 125¡ã
Headrest: 3D adjustable with height and depth customization, suited for users 5'5"¨C6'2"
Armrests: 4D flip?up design for flexible positioning and full clearance when folded
Base & Lift: Heavy?duty stainless steel base with leak?proof SGS lift mechanism, supporting up to 400 lbs
Casters: PU wheels for smooth, floor?friendly rolling
Intended Use: Designed for extended sitting sessions of 8+ hours