Mother Earth wants you! Enlist today in saving the planet and protecting your environment. The Green Earth collection of tartan hats includes this army cap, which lets you wear a stylish military-esque profile without undergoing boot camp. This cap is made from pure virgin wool so it's very soft, comfortable, and completely packable. It features the Green Earth Tartan pattern, in which every color has a meaning. Blue stands for water and sky. Green represents the forests and plants. White invokes the pure icecaps. And red raises the alarm of placing these treasures in danger. This hat is more than just a fashion statement; it's an environmental rally cry. A portion of the proceeds benefit the Arbor Day Foundation.