On A Scale Of 1 To 10 Half Marathon Runner 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 On A Scale Of 1 To 10 Half Marathon Runner T-Shirt. Are you feeling pretty awesome after running a half marathon? Get this funny running shirt to show off your achievement! Makes A Great Gift For Anyone Running A Half Marathon! Lightweight, Classic fit, Double-needle sleeve and bottom hem