Adjustable Height Office Chair with Headrest Lumbar Support

【Ergonomic Office Chair with Lumbar Support】 According to the natural curve of the human spine, the mesh office chair is designed with ergonomic construction to provide proper support to your back and body while you are sitting in. With a double-back structure to support the backrest and lumbar together, adjustable headrest and wide seat cushion, especially designed for working people who have lower back pain and discomfort. 【Multi-Adjustable Functions】 Computer rolling chair 2D armrests are made of plastic material, providing comfortable support for your arms and shoulders. The height range of 3", so you can adjust them to suit your individual needs to take the strain off your arms. Toggle the seat height adjuster to the height that suits you within 3". The recliner which adjusts the seat back angle 90°-120° allows you to enter rocking and locking modes for different sitting positions. 【Large Cushioned Seat & Mesh Back】 With its generous 20.5"(W) x 20"(D) seat and high-elastic foam cushion, this computer desk chair provides adequate cushioned support and relieves fatigue after extended sitting. Plus, the breathable mesh back lets air, body heat, and moisture to freely pass through, keeping you naturally cool. 【30-minute Setup & Selected Materials】 All the necessary parts, hardware and easy-to-follow instructions are included in the package for simple 6-step setup within 30 minutes. This ergonomic computer chair is built of plastic & mesh back, foam-padded seat, SGS-certified Class 3 pneumatic cylinder and nylon base & wheels. Capable of holding up to 136kg/300lb.