Keep Calm And Train Hard Karate 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 Keep Calm And Train Hard Karate T-Shirt. If you train hard you will reach your goals! Makes a great gift! Lightweight, Classic fit, Double-needle sleeve and bottom hem