Chicago 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 Retro Classic Chicago Illinois T Shirts. Windy City tees available in many sizes and colors. Popular Chi Town Windy City shirts for men,women and kids. Lightweight, Classic fit, Double-needle sleeve and bottom hem