Under Armour UA Launch Elite Short Sleeve Women's. This shirt features Iso-Chill fabric which helps disperse body heat, making it feel cool to the touch. Strategic laser perforations provide added ventilation, while the 4-way stretch material moves better in every direction. The fabric wicks sweat and dries really fast, and it has a shaped, side-vent hem. Odor control technology minimizes odor. Material: 94% Polyester, 6% Elastarell.