Typically, upholstery is fastened to furniture by adhesives, tacks or staples. London-based industrial designers Yael Mer and Shay Alkalay, a/k/a Raw-Edges Design Studio, took a different approach with this experimental chair design. Its wooden frame has a purposeful notch in it. The upholstered foam is simply wedged into it and held fast by friction. This would make repair, or removing the upho