Under Armour Lacrosse Icon T-Shirt - Men's The Under Armour Lacrosse Icon T-Shirt contains lightweight UA Tech fabric that has an ultra-soft, more natural feel for unrivaled comfort. The Signature Moisture Transport System wicks sweat away from the body, while anti-odor technology prevents the growth of odor causing microbes. HeatGear works best for weather 75-100 degrees. 100% polyester. Imported.