Shirts are high quality 6 oz. 100% heavyweight cotton. The first installment of this very special series. The Hirohata Merc is a 1950's custom car often called "the most famous custom of the classic era". Built in 1953 for Bob Hirohata. The Hirohata Merc was built and designed by Sam and George Barris. The first version was painted in Sea Foam Green with darker green inserts by Junior Conway. Can't get any cooler than this one!