Yaheetech Ergonomic/Executive Office Chair with Adjustable Arms/Headrest & Lumbar Support High-Back Swivel Mesh Computer Chair Black SOLID & DURABLE: This mesh office chair is constructed of high density polyester mesh back and headrest, high elastic foam seat, SGS certified gas lift, durable plastic frame, and heavy duty plating metal base; solid office chair with high load capacity can hold up to 150kg/ 331 lb, strong and sturdy enough for your daily use ERGONOMIC: Curved headrest and back are made of flexible mesh, which can perfectly fit in with your body line; lumbar support for lower back to enhance safety and comfort; this ergonomic office chair can relieve your fatigue after long time sitting FREELY ADJUSTABLE: The mesh headrest and lumber support can be pulled up or lowered down to help support your neck and back more flexibly and comfortably; the seat height can be adjusted from 46.5cm/ 18.3 to 58.5cm/ 23 by simply operating the lift bar; backrest can be tilted by unlocking the mechanism under the seat, a tilt tension knob to adjust the tilting intensity; armrests are adjustable in height, customize your own chair according to your needs SUPER COMFORTABLE: Mesh headrest and back guarantee great breathability of this chair, help dissipate heat and keep wetness away during the summer days; soft PU covered armrests, thick foam padded seat and lumbar support are soft and comfortable for your better enjoyment CONSIDERATE DESIGN: Cloth hanger on the back is definitely a shining point of the chair, it perfectly solves awkward situations like wrinkles on the coat caused by hanging it directly on the backrest, or no place to hold your coat, bag, scarf, etc.