I Survived 100 Days of School Tshirt Teacher / Student 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 100 Day Shirt cocomo tee Teacher/ Student (YOUTH) Tshirt Lightweight, Classic fit, Double-needle sleeve and bottom hem