A slightly updated version of leonardo da vincis virtuvian man originally drawn circa 1490 a polymath painter musician and writer da vinci invented parachutes machine guns helicopters and ball bearings however pierre michaux is commonly credited with inventing the motorcycle in the 1860s bad luck leot shirt design reads bikerus vitruvienour crew neck short sleeved mens t shirts are 100 premium cotton in a soft pre shrunk jersey knit our womens t shirts are lighter weight 150g