This adjustable office chair provides optimal support and comfort for the head, neck, and back. The 3D headrest can be adjusted in height of 9cm and angle of 70 to provide support to your cervical spine at the most comfortable spot, while the armrests offer height adjustment of 8cm as well. The desk chair features a 4-directional lumbar support system that can be customized vertically (5cm) and horizontally (3cm) to reduce the risk of back pain. A rocking backrest with a lock lever allows for gentle movement of 90-120 to reduce discomfort. The office chairs height is 99-129cm adjustable and it also has a 360 swivel feature. The mesh ergonomic backrest ensures proper air circulation, and the thick sponge offers softness and comfort. With a stable frame and wheels, this executive chair offers both stability and easy mobility. - Gymax Mesh Ergonomic Office Chair Swivel Adjustable Task Chair Rocking Back in Black