This bold vintage-style design features a Theodore Roosevelt-inspired rider on a woolly mammoth, set against red, white, and blue fireworks with a black-and-white American flag on a black shirt. The woolly mammoth, Mammuthus primigenius, lived during the Pleistocene Epoch, and the distressed retro artwork blends Ice Age natural history with patriotic conservation-era energy. Made from 100% ring-spun cotton (high-quality cotton) with a soft, sensory-friendly feel. Every order funds kelp restoration on the Pacific Northwest coast.