This soft and comfortable flannel features sweat-wicking tech and venting—making for an easy go-anywhere, wear-anytime layer. This subtle fishing-inspired shirt features a vented back that adds cool breathability, a utility loop and chest pocket that makes securing your smaller lures and flies convenient. Columbia's long sleeve fishing shirt comes in many inclusive sizes and stylish colors. Regular Fit. To ensure the size you choose is right, utilize our sizing chart and the following measurement instructions: For the sleeves, start at the center back of your neck and measure across the shoulder and down to the elbow. If you come up with a partial number, round up to the next even number. For the chest, measure at the fullest part of the chest, under the armpits and over the shoulder blades, keeping the tape measure firm and level.