The Larousse/Kauhsen Martini Porsche 917 might not have won back in 1970, but it definitely had the grooviest paint job. Also available in long-sleeved!

Men's sizes, to fit chest size:
S 36" M 40" L 44" XL 48" XXL 52"
Girl's sizes, to fit chest size:
S 31-33", M 34-36", L 37-39", XL 40-42"
(Sizes given are for guidance only, you are welcome to exchange your garment should it not fit)