Versatile adjustment: The mesh office chair provides optimal support for the head, back, hips and arms. The adjustable headrest, lumbar support, seat, and armrests meet different needs and reduce fatigue from prolonged sitting. Comfortable adjustable seat: The ergonomic office chair can be adjusted forward and backward by 5 cm, making it suitable for people of different heights. Padded with high-density molded foam and breathable mesh fabric, it provides superior seating comfort. Backrest, armrests, and headrests: The swivel chair backrest can be tilted to 90°, 115°, and 135°; the headrest is adjustable in height and angle; The armrests are soft and flexibly adjustable, providing comfortable support for the back, neck and arms. Comprehensive lumbar support: The 6-part TPR lumbar support is adjustable in height by 4 cm. Together with the raised design, it effectively supports the waist and relieves fatigue caused by long sitting. High quality: The ergonomic chair is equipped with BIFMA-approved, quiet and smooth-running wheels. Partly made of aluminum alloy, the base and armrest are sturdy and durable, ensuring a load capacity of up to 150 kg. Product information: Color: Ink Black Material: Steel, Aluminum alloy, Polyester, Polyurethane foam, Nylon Size: 70 x 70 x (115-125) cm (D x W x H) Seat height: 45-55 cm Seat size: (50-55) x 50 cm (D x W) Backrest size: 51 x 77 cm (W x H)Armrest height (from seat): 17-24 cm Weight: 17.2 kg Max. Static load capacity: 150 kg Scope of delivery: 1 x Office chair 1 x Accessory package 1 x Instructions