This hat is a salute to the world&';s first National Park - Yellowstone. Over hundreds of thousands of years, the land we call Yellowstone National Park formed over a colossal magma chamber and resulted in astonishing geothermal geysers and otherworldly prismatic pools. Home to the oldest Bison herd in the country, Yellowstone also has 13 separate wolf packs, and oh yeah- GRIZZLIES. We love Yellowstone for its awesome geology and wildlife, but the real reason this park is important to us, is because it represents the protection and preservation of our precious wild spaces. We think you&';ll agree with us that the decision to protect Yellowstone in 1872 was definitely a Great American idea.