The PC Series is a full-featured cousin to the popular Patriot Series of chairs. With an ergonomic control that allows users to control everything from seat tilt, to back tilt and forward tilt, the PC Series can really do it all. Added to all of that, the sleek styling of the PA Series combine with the features to make PC chairs a truly affordable workhorse for any office environment! PC Collection Includes: PC53, PC55,PC57, PC58, PC59, etc.