Birthday Boy Tshirt Party 3rd 4th 5th 6th 7th 8th 9th 10th 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 Birthday Tshirt for Boys 3rd Birthday, 4th birthday, 5th birthday, 6th birthday, 7th birthday, 8th birthday, 9th birthday, 10th birthday, 11th birthday, 12th birthday tshirt Birthday Boy Shirt Lightweight, Classic fit, Double-needle sleeve and bottom hem