Nautica Baby Boys' Long Sleeve Button Down Shirt, Pullover, and Short with Faux Belt Set Sweater: 100% Cotton; Shirt: 70% Cotton, 30% Polyester; Pant: 60% Cotton, 40% Polyester Imported Pull On closure Machine Wash Three piece set Printed flag artwork on sweater Woven button up shirt Twill pants with functional pockets Adjustable waistband