This multi-functional office chair features a triple paddle control to adjust the seat height, back angle and tilt lock. This chair offers great comfort benefits when having to sit for long periods at a time. A mid-back office chair offers support to the mid-to-upper back region. This chair is ideal for anyone who does a great deal of typing throughout the day and needs good back support. The locking back angle adjustment lever changes the angle of your torso to reduce disc pressure. Chair easily swivels 360 degrees to get the maximum use of your workspace without strain. The pneumatic adjustment lever will allow you to easily adjust the seat to your desired height. []Features:- Finish: Black- Mid-Back Design- Built-In Lumbar Support- Black Fabric Upholstery- Triple Paddle Control Mechanism- Infinite-Locking Back Angle Adjustment- Back Height Adjustment- Multi-Tilt Lock Mechanism- Waterfall Seat promotes healthy blood flow.Specifications:- Overall Product Dimensions: 39" - 44.5" H x 24.75" W x 23" D- Overall Product Weight: 38 lbs- Back Adjusts 1.5" up and down- Warranty: 5 Year Limited (non moving metal parts) 2 Year Parts.