Yo, I'm 8 Birthday Tshirt Eight Eighth Birthday Celebration 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 8th Birthday Tshirt, Eight Years Old Birthday Tshirt for Boys or Girls Eight Years Old Birthday Tshirt, 8th Birthday Lightweight, Classic fit, Double-needle sleeve and bottom hem