Excursion vest in J.Crew Signature Tartan

but still warm enough to keep chilly weather at bay—now in the signature tartan print that we developed in-house. While we may not have invented tartan (you can thank ancient Celtics in the 8th century BC for that), we have spent a lot of time getting ours just right. Meet our signature design: We only altered the scale and checks slightly from tradition (less than 3% to ensure it still meets the definition of true "tartan") and added a shot of vibrant magenta for an exclusive-to-us twist.