There are so many different biker clothes and other gear that you probably have in your closet. Which pieces of clothing do you normally take with you when going on a road trip on your bike? Justin Schamotta suggests taking thin items and maybe a touring suit meant for riding in any weather. Besides from clothes, he suggests putting food and tools on the packing list as well.
Source: http://traveltips.usatoday.com/packing-list-motorcycle-trip-29681.html