Ergonomic S-shaped backrest design with adjustable lumbar support Multi-directional adjustable headrest with 45-degree rotation 3D adjustable armrests with height, forward/backward, and rotational movement Breathable reinforced mesh back for optimal airflow and comfort Heavy-duty construction supporting up to 350 pounds with easy assembly This sophisticated ergonomic office chair is engineered to provide comprehensive support for extended work sessions. The innovative S-curve backrest aligns per