Experience better work time with the Shift Office Chair. Ergonomically designed, Shift comes with built in lumbar support, breathable mesh back, nylon base and dual-wheel casters for easy movement over hardwood or carpeted surfaces, 360 degree swivel, pneumatic gas cylinder, height adjustable armrests that pivot in all four lateral directions, tilt tension control knob, and 3" thick dense foam seat padding. Set Includes: One - Turn Office Chair