Italian design team SI DESIGN created our newest and boldest task chair series: 4U. Designed around you with a shape that fits you, supports you and looks great. With its variety of options, 4u mesh serves as a work chair, a tall or extra tall stool or as a conference chair with fixed arms. The breathable, 4-way stretch elastomeric mesh is available with adjustable lumbar support. Pair with original slim line seats or extra comfort foam made with via seating’s high density, closed-cell, cold-cured, injection molded, CFC-free, foam. 4U utilizes the latest body balance technology mechanisms.