The last great costume party. An orange harvest moon backs a lineup of black silhouettes: a prowling T. rex, a Triceratops, wheeling pterosaurs, one witch who is clearly lost, and a grinning jack-o'-lantern in the grass, all under jagged 'HALLOWEEN 66 MYA' lettering on a dark brown tee. 66 million years ago is when the Cretaceous ended, which is scary enough. Made from lightweight 100% ring-spun cotton with a soft, sensory-friendly feel. Every order funds kelp restoration on the Pacific Northwest coast.