Polyester blend. This is a like new 3 piece suit from Sean John! 1 suit jacket(52R), 1 vest, and 1 pair of pants(46W x 32L). Black with silver pinstripe. Lined jacket. Versitle. Non-smoking household. Tags: Prom. Wedding. Formal. Eveningwear. Date. Holiday. Anniversary. All season. Classic. Pinstripe. Vests. Sportcoats. Suits. 3-piece.