Made of Polyester. Boys suit size includes jacket,pants,shirt and tie.Blue suit including jacket, pants, white shirt, bow tie,Grey suit includes jacket, pants, blue shirt, bow tie. Stylish and elegant neckline,single breasted blazer. The tuxedo suit works for boys to attend wedding, ceremony, pageant, family/friends/christmas/new year parties,school/daily wearing,shows, and any other special occasions. It is also a nice gift to kids. Please refer to size chart in the left picture before order. Boys Formal Suits 4 Piece, Slim Fit Dresswear Suits Set