Solve is the single seating solution that helps a variety of users achieve optimal comfort in workstations, touchdown areas, collaborative environments, meeting rooms & more. This Solve mid-back task chair features a breakthrough, ReActiv back material designed to provide enhanced support above & beyond ilira-stretch mesh. It flexes to provide a firm fit & keeps the body cool by enabling continuous airflow. Synchronized seat & back provide proper balance, alignment & lumbar support, & can be adjusted with a single lever. Adjustable-height arms move up & down for shoulder & upper body support. Other functions include pneumatic seat-height adjustment from 18" to 23", 360-degree swivel & tilt tension. Waterfall seat edge promotes better leg circulation. Five-star base is equipped with dual-wheeled casters for smooth mobility. Upholstery color is Midnight; frame color is black; ReActiv back color is charcoal. Weight capacity is 300 lb.