Flash Furniture Black Multifunction Ergonomic Drafting Chair with Adjustable Foot Ring and Adjustable Arms Contemporary Draft Stool Mid-Back Design Black Fabric Upholstery Built-In Lumbar Support Triple Paddle Control Mechanism Back Height Adjustment Back Adjusts 2.25'' up and down Infinite-Locking Back Angle Adjustment Multi-Tilt Lock Mechanism Waterfall Seat promotes healthy blood flow