1. The contemporary office chair ergonomic back design,beautifully upholstered in Black Leather.The chair is super comfortable and easy to use office chair. 2. With swivel wheels, you can super easily move from co-worker to co-worker or even room to room. 3. The chair has an upright locking position feature, providing comfortable back support. 4. The pneumatic adjustable gas lift allows for easy seat height adjustment, to help you find the personalized sitting style that suits you and your work environment. 5. Padded arm rests and a high back round out the comfort details and make this an excellent choice.