The Under Armour® All-Season Flats Guide long-sleeve shirt offers you comfortable moisture transport and temperature control with special Under Armour® fabric. There's a VELCRO® brand closure chest pocket and a zipper chest pocket for sunglasses and other valuables. Buttons on the sleeves allow for rolling up sleeves as the day goes on, and strategic placement of UA Mesh venting under the arms and collar keeps you cool all day long.