Flash Furniture HERCULES Series 24/7 Intensive Use Big & Tall 350 lb. Rated Black Mesh Multifunction Swivel Chair with Synchro-Tilt Contemporary 24/7 Multi-Shift Use Office Chair 350 lb. Weight Capacity Mid-Back Design Ventilated Mesh Back Material Built-In Lumbar Support Dual Paddle Control Mechanism 2-to-1 Synchro Tilt Adjustment Tilt Tension Adjustment Knob Suspension Seat reduces pressure 3'' Thick Padded Black Fabric Upholstered Seat