● Oversize U-shaped cushion offers a supportive seat for different postures● Ergonomic design provides sufficient back support● Easy-to-clean PU leather features good quality of wear resistance ● 100°-120° rocking mechanism with rocking tension control ● SGS gas cylinder allows for 19"-22" height adjustment ● User-friendly details of the 360° swivel seat and smooth rolling casters for flexible movement● Heavy-duty metal base ensures a stable structure● Armless chair can be tucked under the table to save space