Ergonomically designed executive office chair with built-in lumbar support and paddle adjustable pneumatic seat height adjustment. Upholstered in espresso PU leather or LeatherSoft which is leather and polyurethane for added Softness and Durability; waterfall seat design helps to reduce leg fatigue and improve blood circulation. Upright locking position and adjustable tilt tension control for comfortable rocking and positioning. Hold weight of up to 250 pounds; easy assembly upon arrival; NTR-no tools required.