Sol is comprised of components that were selected to maximize use of recycled materials allowing great impact indoors and less impact out. It's smart design and it aims to renew more than the working environment. And because nature takes no downtime, we've focused on a chair that helps support individuals as well as the planet. Sol's beautiful swooping back hugs a steel frame with sleet metal accents, It features a synchro-tilt mechanism with locking positions and tilt tension control. height adjustable T-pad arms are also offered.