This premium ergonomic office chair features a black PP fiberglass frame paired with a supportive headrest for enhanced neck and upper spine alignment. It is equipped with fixed black and white armrests made from durable PP material, offering stable and comfortable arm support. The seat is molded from high-resilience sponge and upholstered in 100% polyester fabric, known for its wear resistance and soft, sofa-grade finish. A three-level tilt lock mechanism allows for personalized reclining and posture control, while the black three-stage gas lift ensures smooth and reliable height adjustment. The chair rests on a robust 340mm five-star PP fiber base with an impressive load-bearing capacity of up to 1133 kg, and it glides smoothly on 55mm PU wheels designed for quiet, floor-safe movement.