This Office Chair known as ERGOMAN has multi-adjustable features. The salient features are Height Adjustable Armrest with Rotational PU Arm Pad, Multi-tilting Position Locking Mechanism, Height Adjustable Seat, Seat Depth Adjustable and Adjustable Headrest This chair is upholstered with durable Nylon Mesh for the Seat and Polyester Mesh for the Backrest & Headrest. They provide good air ventilation. The Base and Joints are made from rust free aluminium.