Named for the bohemian Left Bank of Paris, YSL Rive Gauche was the ready-to-wear offshoot of Yves Saint Laurent's couture house, founded in 1966. This is a lovely classic piece in a brownish greige color, likely a wool blend (no fabric content label) and fully lined. Faux double buttons (one functional, plus an inside security button) and front pockets. Impeccably tailored, of course. Made in France. Marked a 42 (US 8); I would recommend for a 8/10.