Made to shade, this performance shirt features sun-stopping UPF 50 protection and moisture wicking properties to keep you dry.  A summer shirt with elemental tech is necessity in your kit for long days under the sun. Made up of a combination of Columbia's signature protection materials: UV blocking yarns with the wicking nature of the fabric, works to pull moisture and sweat away — to keep you comfy all day. Columbia offers this women's summer long sleeve 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.