Show your support for those who enforce law and order with the 5.11 Tactical Mens Thin Blue Line Long-Sleeve T-Shirt. This comfortable, 100% cotton 5.11 shirt has a low-profile 5.11 logo on the left chest and a large American flag on the back with the unmistakable blue line and the words Back the Blue, letting everyone know your values before you even say a word. Machine wash. Imported. Sizes: S-2XL. Color: Black. Type: Long-Sleeve Tee Shirts.