New Arrival! The V-Twin Button Racer by Steady Clothing. Men's Classic Black Button Down Shirt with Dark Orange & White Racer stripes on the right front panel with exclusive silver V-12 designed Button Details. A V-twin engine, is a two-cylinder internal combustion engine where the cylinders are arranged in a V configuration. Material: 86% Polyester 14% Rayon. Shirt is Machine Washable and proudly Made in the USA!