Global warming and habitat destruction have made the need for animals to migrate between shifting habitats urgent - the difference between migrating and remaining within fixed boundaries is the difference between life and extinction. The Freedom to Roam initiative strives to connect North America's critical habitats to ensure the survival of large mammals. Five dollars from the sale of each shirt will go to the cause. Original artwork by Jay Ryan. Made of supersoft, 100% organic-cotton jersey and recyclable through the Common Threads Recycling Program.