These armchairs, model G10, were designed in the fifties by Pierre Guariche for Airborne (label producer under the seat, picture n°8). It is composed of a black metal tubular base, a seat and back in foam covered with a beige velvet. The two armrests are also covered with foam and velvet. It's very comfortable thanks to the system of springs and slats that support the seat.
These armchairs are part of the iconic pieces of the XX century design.