Sit comfortably with the Oresyn Office Chair. Designed with a sturdy nylon base and sleek ergonomic design, Oresyn features a breathable mesh back with passive lumbar support, padded mesh seat, and armrests that easily raise up and out of the way. Complete with five dual-wheel casters, 360-degree swivel, height adjustable pneumatic lift, and three-position synchro tilt and lock mechanism, Oresyn comes well equipped with all your office seating needs.