The V.XI Sigurd shirt is the king of performance base layers and is loaded with innovation and mission-specific construction features. Crafted with 5.11's own stretch knit mesh with Cryo-Tac properties, the shirt provides a cool to the touch feel, enhanced moisture wicking and anti-odor performance. With an athletic ergonomic pattern and flat lock seam construction, the shirt fits close to the body with outstanding comfort. Wear it on its own, under your plate carrier or as part of a layering system and you'll find the Sigurd to be the champion.