Men's UA HeatGear174; Fitted Shorts Bottoms by Under Armour Premiere fitted base layer with lightweight, textured fabrication and classic Silhouette. A premier fabrication story offering thermal regulation and superior moisture transport. A Specialized fit, slightly tapered to body's shape without compression. Built with Flatlock Seams that feel smooth against the skin and prevent chafing. 30+ UPF protects your skin from the sun's harmful rays and inhibits premature aging.