Different materials chairs: 

Side chair - Harry Bertoia

Wire chair - des. Harry Bertoia, 1952

Wire chair, designed by Harry Bertoia, has base and basket in welded steel with rods in polished chrome or white lacquered. The removable cushion is upholstered in "Giorgia" leather (click colours), pony (white and brown, white and black or totaly black), "Linosa" fabric (click colours) or synthetic leather (black, red or white), secured to the chair with lock snaps.
Delivered with the basket to be connected to its base.
The Wire Chair can also be requested with a white or black structure (already assembled) for a minimum of 4 pieces. Prices on request.
Substitute cushions can be requested.

Also :
armchair
stool