Pump Office Chair By Modway - EEI-2215Steer your way to enhanced comfort and productivity with the Pump Office Chair. Ergonomically designed, Pump 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, height adjustable seat and armrests, and a tilt tension control knob with four locking positions. Pump also comes with a plush 3. 5 inch padded foam seat cushion, making this an