This vintage-inspired science t-shirt features a bold, distressed diagram of Earth’s internal structure—crust, mantle, outer core, and inner core—illustrated in crisp white ink against a deep black background for high-contrast clarity. Rooted in geologic processes that span Earth’s history from the Hadean Eon to the present, the retro educational design echoes classic textbook and field-diagram aesthetics while remaining modern and wearable. 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.