An outdoor enthusiasts dream, the Columbia Men's Smith Creek Woven Long Sleeve s the ultimate outdoor staple for its quick-dry and sun protection fabric. This shirt remains lightweight, yet durable, no matter the weather or catch. High quality materials and expert craftsmanship are the backbone of Columbia men's apparel. The technology featured in this shirt is necessary for any outdoor adventure. The exterior layer is made up of a combination of Columbia’s signature protection fabrics: UPF 50 works to block and shield you from harmful UVA and UVB sun rays known to cause skin damage; the advanced wicking fabric works to pull moisture away from the skin so sweat can evaporate and you can remain cool. This long sleeve shirt also has handy features—a single chest to keep your smaller items secure and button closures. Columbia offers this long sleeve shirt in multiple staple colors and sizes. 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.