I make these hoodie designs to say to CN that yes, there should be Ben 10 clothes in adult sizes, and that yes people would buy them!
Here's the fourth set of six. Also the first set with "ultimate" aliens. I think they could take XLR8's hoodie one step further and have it zip over the face, then it'd be more like XLR8's helmet.
Characters from left to right: stinkfly, XLR8, Spidermonkey, Humungousaur, Ultimate Humungousaur, Ultimate Spidermonkey
Ben 10 & Ben 10 Alien Force & Ben 10 Ultimate Alien (c) Man of Action
designs (c) me