|Designed with comfort and ergonomic support in mind. Easy-to-tailor for personal fit with adjustable lumbar support, side tension adjustment, seat depth/height adjustment, and width-adjustable arms. Synchro-tilt motion allows the seat and back to adapt to the users' movement for exceptional support and additional comfort. 100% polyester upholstery with Nano-Tex® for superior stain resistance. Pneumatic seat height adjustment. Seat glide mechanism. 360º swivel. Tilt tension and tilt lock controls. Black five-star base with non-hooded casters. Urethane arm pads.