I Swim Because Punching People Is Frowned Upon 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 swiming t-shirts, swim t-shirt, t-shirt for swimmers, swimming, swim meet, swimmers Lightweight, Classic fit, Double-needle sleeve and bottom hem