Akira Black Ergonomic Mid Back ChairDimensions (cm): 105H X 50W X 68D BIFMA Certified Standard Office Chair without headrest 3D Adjustable Armrest; Front and Rear, Up and Down, Rotation adjustment, Multi angle adjustment Wire controlled Aluminum self loading mechanism with 3 gear locking REACH Certified Automatic backrest with Elastic adjustment Seat sliding mechanism Soft Polyurethane seat pad designed with molded foam to enhance the Ergonomic design of the chair Seat cushion :