Abstract: In order to create an elegant and light seat or chair, which nevertheless has stability comparable to sturdy utility chairs, a chair is proposed which includes a seat portion and a backrest portion with each of the portions including a flexible flat structure clamped to metal frame elements. Each metal frame element is provided with a longitudinal groove which accommodates a compressible metal which is pressed into the groove while binding the edge of the flat structure. The metal frame elements are preferably formed of extruded aluminum rod material with the groove being provided with undercuts forming barbs. A soft aluminum wire is employed as the compressible metal. The flexible flat structure may take the form of a web or a net type material.