The unobtrusive appearance of the .03 chair makes it ideally suited for offices and meeting areas. The seat shell, which is made of resilient integral skin foam, adapts to the sitter's body with the help of leaf springs embedded in the backrest. This construction provides enhanced comfort by flexing when the sitter leans back. Up to 10 chairs can be stacked on the floor, up to 20 chairs on a stacking trolley.