White Ergonomic Office Chair

*Brief description:* A white and gray ergonomic mesh office chair photographed from the rear angle against a plain, slightly scuffed light gray wall. - *Design*: White plastic frame with a gray mesh backrest and seat, featuring a built-in lumbar support section. It has adjustable armrests, a height-adjustment lever, and sits on a white 5-star base with black caster wheels. - *Setting*: Positioned on a plain concrete floor, with the chair viewed from behind to highlight the backrest structure and lumbar support.