If your like me, you may be angry there isn't any Ben 10 apparel in adult sizes. WTF. Here are some designs for hoodies I'm dissapointed haven't already been made. I would totally wear these.
The Characters from left to right: Heatblast, Upgrade, Big Chill, Goop, Water Hazard, Terraspin
I somewhat used this picture as a base for each hoodie: [link]
Ben 10, Ben 10 Alien Force & Ben 10 Ultimate Alien (c) Man of Action
designs (c) me