SL10, La Lampe Gras, is a stackable chair designed in 1927 by Henri-Julien Porche functional design and simple. The history of the stackable chair Surpil focuses on the design of a completely new mobile metal for public spaces (restaurants, café terraces and furnishing of public spaces). Surpil is at the same time functional and equipped with overhead lines carried by the assembly of two tubes that form the seat and backrest. What gives this object lightness and strength.