Ergonomic Design Office Chair Built-in Lumbar Support

The seatback can slightly tilt 95 to 115 degrees (can't lock the angle) when you lean back and it springs back after you sit up. Keep air circulation for extra comfy. More elastic and comfortable, built to last. Give extra support to the head and keep you comfortable daily work. Provide good back support to reduce back pain. Thick explosion-proof nylon base. Fast up-and-down gas lift. High strength nylon legs. Durable & smooth-rolling casters. Package include 1 x office chair.