I assume you're talking about Foamy from Neurotically Yours

If you take a look at their Store, you'll see that no, there aren't Foamy hoodies. That leaves you with two options: Buy an iron-on kit and make your own (or have one made for you), or e-mail the people who run the site and tell them you want a hoodie. Get your friends to e-mail them, too. If they get enough requests, they'll undoubtedly try to get them to the market.