The flowing sleek lines of this chair by S.I. Design adds to the ambiance of sophistication in any environment while also providing incredible ergonomics, comfort and functionality. 4u’s range of backs include mesh, upholstered or welded fabric “groove”, which is a slim, comfortable hybrid of mesh and fabric. White and black frames are available with matching arms and bases. 4u offers two seat options: the euro slim line sit and the enhanced comfort sit. Also available as task stools.