Different materials chairs: 

Costes chair - Philippe Starck

Costes Chair - des. Philippe Starck

Costes chair, designed by Philippe Stark, is a small armchair in black laquered steel tube frame and mahogany or ash-wood shell: the finishes are natural or open pore black stained ash (also cherry wood or walnut stained finish can be asked : +5%).
The cushion is black leather covered.