Wyoming Flag 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 Travel Wyoming State T Shirts. Patriotic tees available for men,women and kids. Popular custom travel America collection Wyoming flag shirts by Tee Styley. Vintage t-shirts available in many sizes and colors. Lightweight, Classic fit, Double-needle sleeve and bottom hem