654 Shirt - Pittsburgh is the City of Champions Again..! 412 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 654 Indicates the number of Championships the City of Pittsburgh has won. Under each number shows the year each championship was won. 412 all the way..! Lightweight, Classic fit, Double-needle sleeve and bottom hem