This retro, vintage-inspired design features four classic trilobites—Olenellus, Phacops, Elrathia, and Calymene—illustrated in soft natural tones of brown, green, blue, and ochre on a white shirt, with the playful caption “trilo-besties.” Highlighting beloved Paleozoic arthropods, the artwork spans trilobite diversity across the Cambrian, Ordovician, and Devonian periods, blending natural history accuracy with a cheerful fossil-collector vibe. 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.