This is the modified version of the S2 model portable armchair designed by Mehmet İrfan Dolgun between 1959 and 1972 and produced by SIM Furniture Factory. The structure of the portable office armchair with wheels, produced in a limited number, is solid beech, and the upholstery of it is vinyl. As for its legs, they are beech lathe. It was ordered by Masis firm to be marketed as office chair. Besides the ease of handling, the features of the furniture highlighting it can be listed as its simple form and modest dimensions. The dimensions are 58x64x78 cm.