This Mesh Task Chair is upholstered with mesh material that was designed to prevent body heat and moisture build-up and CaressoftPlus seat. The mesh back provides the perfect level of support by conforming to each individual’s back shape. The adjustable tilt tension control knob, which is located under the seat, allows you to customize the tension of the tilt. The chair has an upright locking position feature. The height adjustable arms with soft polyurethane pads provide comfortable and versatile arm rests. The 25’’ black nylon base provides added stability to the chair. The hooded double wheel casters make it easy to move and shift directions.