A trilobite in full armor, drawn in dense black stipple engraving: sweeping cheek spines, a segmented thorax bristling with points, and a headshield like a knight's helm. Trilobites were arthropods that patrolled the seafloor for roughly 270 million years, from the Cambrian to the end of the Permian, and they saw it all through some of the first complex eyes on Earth, with lenses made of calcite crystal. Made from lightweight 100% ring-spun cotton with a soft, sensory-friendly feel. Every order funds kelp restoration on the Pacific Northwest coast.