Tubular iron frame, diam. 22 mm. Metal seat pan covered with black technical fabric.Stackable up to a maximum of 4 pieces (standard version); up to a maximum of 10-15pieces (contract version). FEATURES covering finishing CPF full grain leather (30 colors available) CTT contract leather (18 colors available) COM material provided by the customer FE felt (30 colors available) FX faux leather (30 colors available) PPF soft leather (45 colors available) structure finishing BI glossy white BO matt white BR bronze painted CH champagne GF graphite painted NO matt black NS semi-bright black OR gold painted PG pearl grey