Under Armour UA Launch Elite Short Sleeve Women's. This shirt features Iso-Chill fabric that helps disperse body heat, keeping you cool and comfortable. Strategic laser perforations provide added ventilation, while the 4-way stretch material allows for better movement in every direction. The fabric wicks sweat and dries quickly. It has a shaped, side-vent hem and odor control technology to minimize odor. The fit is adjusted for a streamlined, aerodynamic cut. It's designed with minimal seams to prevent chafing. Reflective details enhance visibility in low-light conditions. Care instructions: Machine wash cold with like colors, do not bleach, tumble dry low, do not iron, do not use fabric softener, do not dry clean. Materials: 64% nylon / 36% polyester.