Kids Superhero 3 Year Old Boy's Birthday T-Shirt Solid colors: 100% Cotton; Heather Grey: 90% Cotton, 10% Polyester; All Other Heathers: 50% Cotton, 50% Polyester Imported Machine wash cold with like colors, dry low heat Hey, the party's here, celebrate with the three year old boy! Children's kids size t-shirt in bright primary blue, yellow and red great for a 3rd birthday party t-shirt Lightweight, Classic fit, Double-needle sleeve and bottom hem