Flexible dual ABLEX patterned fabric on back and seat. Provides generous lumbar and pelvic support. Supportive dynamic back movements. Mesh allows air to circulate freely Super soft elongated polyuthrethane arm pads. Vertical and horizontal lumbar adjustment. Ergonomically contoured seat and backrest Waterfall seat design. Intuitive and easy-grip side tensioning. Synchronous knee tilt mechanism with built-in seat depth stepless tilt lock, pneumatic seat height adjustment and tension control Enersorb seat, lumbar and headrest foam. Breathable mystic 4-way stretch knit on seat, lumbar and headrest for improved airflow and comfort. 2 in. mag Wheel carpet casters Frame, arms, floor and trim standard in graphite finish. Conforms to ANSI/BIFMA standards. Constructed of five-prong die-cast aluminum with non-slip lye. No assembly required. Height adjustable: 36.25 -41.35 Back height: 22.0 Seat height: 16.0 -21.0 Back width: 22.0 Seat depth: 19.25 -21.3 Seat width: 20.0 Overall dimensions: 29 W x 29.5 D x 41 H (74 lbs.). 4D armrests that allow user to adjust arms up and down, in and out. Arm pads swivel or arm pads slide front to back. Meets or exceeds ANSI/BIFMA standards, GreenGuard certified, E3 Level 1 certified, Made in North America. The CXO chair is the world's most comfortable task chair. Ideal for a variety of environments, the unit sets a new standard for ergonomic executive seating.