Elevate your office comfort with the Costway Black Ergonomic Adjustable Swivel Office Chair. This task chair features various adjustable features designed to support your posture throughout the day. This chair is a marvel of design with its adjustable 3D headrest that can be altered up to 9cm in height and angled by 70° to target support precisely where you need it. The armrests can also be adjusted by 8cm to enhance your comfort. Experience the unique 4-directional lumbar support that adjusts both vertically and horizontally to align and relieve your spine during those long working hours. Additionally, the chair's rocking backrest offers a range of motion from 90° to 120°, providing a gentle rocking motion that helps reduce stress and discomfort.