• 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