The black heavy duty plastic frame adds durability, strength and support to the design. Includes a mesh back fabric designed for optimal air circulation and comfort The seat is height adjustable, so you can customize it how you like. Arms are stationary in a fixed position Designed with a combination of practicality and good looks, this chair is just what you need to complete your office or home office. 33″ H x 21.5″ W x 23″ D