Colorado Flag T-Shirt With Fly Fishing DesignMachine wash cold with like colors, dry low heat Colorado Fly Fisherman shirt. In fly fishing, fish are caught by using artificial flies that are cast with a fly rod and a fly line. Let it marinate, Let it rust. Great gift for a souvenir of visiting Denver, Breckenridge, Keystone, Vail In Colorado the beautiful mountains are reasons enough to hit the stream and river. Fly fishing is most renowned as a method for catching trout, grayling and salmon,