Interion&#174; 8 Way Adjustable High Back Ergonomic Leather Chair Interion&#174; By Global Industrial Genuine leather upholstered seating surface for a luxurious feel and appearance. Leather chair is fully adjustable for improved ergonomic support. High back chair design cushions your head, neck and shoulders. 5" thick foam is built into the 21"W x 20"D seat and 20"W x 25"H back. Features full function ergonomic mechanisms for seat/back angle and independent back angle adjustment. Ergonomic chair includes height adjustable back seat for precise lumbar support. Height and side to side adjustable arms help prevent arm fatigue. Includes 5-pronged polyurethane base and dual wheel casters. Black. Easy Assembly.