404253 Features: -Lumbar support band and tilt tension adjustment. -Five star arched nylon base with twin casters for easy mobility. -Double wrapped mesh back with padded outer frame in a soft micro suede fabric with mid-back support. -Fashion-forward mesh and micro suede fabrics work in tandem to ensure year-round seating comfort. -Pneumatic gas height adjustment. -Height adjustable arm frames. -Full 360 degrees swivel and tilt tension adjustment. -Adjustable seat cushion provides a higher level of multi-tasking seating support and comfort. -Fire retardant foam.