Made with quick-drying, water-repelling, UPF 50 fabric, this vented shirt offers optimal performance for everything from backyard hangs to trekking trails. Made from a 50% recycled nylon blend, this clean snap-up, features a combination of Columbia's signature protection tech: Omni-Shade's UV blocking sun protection combines with our advanced Omni-Shield water and stain repellent fabric — to keep you clean, dry, and protected all day. A vented back will help to keep you cool, while a cinching hem offers clever fitting. A snap front placket and two chest pockets make this shirt super convenient. Columbia offers this men's shirt in multiple 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