This polyester long sleeve makes a great base layer, keeping you warm on chilly mornings and—once the midday sun hits—neutralizing sweat and the odor-causing bacteria that comes with it. Features oversized Columbia Sportswear and PFG wordmarks on the sleeve. Keep your cool on and off the water with this standout tech tee, featuring UPF 50 for sun protection and high-performance wicking fabric for comfort. The wide array of stylish graphics adds depth and richness to the shirt, so many to choose from, you'll be back for more. Columbia offers this fishing ready shirt in multiple staple colors and sizes. 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 sleeve. 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.