I Love Running 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 Runners love to run. That's why we do it. This tee is great for an upcoming 5K, 10K, 26.2, Marathon or Half Marathon. Lightweight, Classic fit, Double-needle sleeve and bottom hem