Happy 100th Day of School Tshirt 100 Day TEACHER STUDENT 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 100 Day of School Shirt 100 Days of School 100th Day of School Tshirt Teacher Student Youth Lightweight, Classic fit, Double-needle sleeve and bottom hem