Experience optimal comfort and support with our ergonomic desk chair! Featuring a lumbar support system, this office chair ensures proper posture and helps alleviate back pain. The rocking function allows you to adjust the backrest angle from 95 to 110, providing personalized comfort throughout the day. And the swivel function allows for 360-degree rotation, allowing you to easily move around your workspace. The 43-53cm adjustable seat height is designed for extra convenience. For your comfort, the ergonomic design of the chair provides adequate support to your upper and lower back, promoting a healthy sitting posture. The breathable mesh material allows for maximum airflow, keeping you cool and comfortable during long hours of work. - Gymax Home Office Chair Ergonomic Desk Chair with Lumbar Support-Black in Black