Under Armour Girl's Gotta Have It Headband 51% Nylon/ 39% Polyester/ 10% Rubber Made in the USA or Imported Where we started? It all started with an idea to build a superior T-shirt The technology behind Under Armour's diverse product assortment for men, women and youth is complex, but the program for reaping the benefits is simple: wear HeatGear when it's hot, ColdGear when it's cold, and AllSeasonGear between the extremes