Merax Ergonomic Series Pu Leather Office Chair Racing Chair with Footrest Computer Gaming Chair, Recliner, Swivel, Tilt, Rocker and Seat Height Adjustment ATTENTIONThere are 2 colors of wheels for the chairblack and silver with the same qualityas the picture shows, which will be shipped randomly. Both are authentic,hope you understand Adjustable height gas-spring Tiltable seat with lock function 360 degree swivel rotation 180-degree backrest adjustment allows you to adjust it to your needs