Style:Window Box Ant-Man costume shirt with fiber-fill muscle definition, child wears with their own pants or skirt. Costumes are sized differently than clothes, Imagine Small designed to fit 44 to 48 inches tall with 25 to 26 inch waist, see measuring instruction chart. Officially licensed Marvel Comics costume, items shipped and sold by Amazon are guaranteed to be authentic. All Imagine products are tested to meet or exceed all U.S. standards. Dress up play inspires children’s imaginations while they have fun; makes a great gift.