Frontier Shirt JacketSometimes you just need an extra layer of stonewash cotton canvas to make a statement. If the Frontier Shirt Jacket doesn't speak to you, we don't know what will. Its timeless look works well over a 5. 11 Mission Ready Long Sleeve Shirt or with a t shirt and jeans. Best of all, this shirt jacket is utility packed, with Ready Pockets, hand pockets at the waist and a pen pocket on the left sleeve. Bi swing shoulders on the back give you plenty of room