This vintage botanical-style design features Mesozoic ferns and pteridosperm-inspired foliage in bright greens, pale yellow details, and gray wood textures on an olive green shirt. The scientific natural history artwork highlights seed fern lineages associated with the Mesozoic Era, including the Triassic, Jurassic, and Cretaceous periods, with a retro field-guide look. 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.