Solve is the single seating solution that helps a variety of users achieve optimal comfort. This Solve task chair features a breakthrough, ReActiv back material designed to provide enhanced support above and beyond four-way stretch mesh. ReActiv back flexes to provide a firm fit and keeps the body cool by enabling continuous airflow. Synchronized seat and back provide proper balance, alignment and lumbar support, and can be adjusted with a single lever. Seat glides forward when the back reclines for a more natural posture. Other functions include pneumatic seat-height adjustment from 16-3/4" to 21-3/4" , 360-degree swivel, tilt tension and tilt lock. Adjustable-height arms move up and down for shoulder and upper body support. Waterfall seat edge promotes better leg circulation. Frame and seat upholstery colors are black. Seat measures 19" x 19-1/4". ReActiv back color is Charcoal. Back size is 18-1/4" x 21-1/2". Weight capacity is 300 lb.