ERGONOMIC DESIGN: Ergonomic backrest line design with thick sponge padding seat and armrest, covered by faux leather, provides extra comfortableexperience for long-period working ADJUSTABLE HEIGHT: You can adjust seat height to match your desk and your sitting habit. High-end gas lift makes it smooth and safe FLIP-UP ARMREST: Armrest can be lifted for less placement space when not in use MOBILITY: With 360° swivel wheels and liftable armrest, this chair allows all kinds of mobility with no problem and offer convenience. And you can rock back and forth for a break Overall dimension: 65D x 69W x 112-122H (cm) /Seat dimension: 50W x 54D x 47-57H (cm). Seat Surface Size: 52"W x 49D(cm); Weight capacity: 120kg