WOW! This is *homemade*! Incredible! The article links directly to the forum post where the guy describes how he did it, but it'll wonk on you. But if you go to the forum home page, then go to the "Star Wars Costumes" section, you'll find the thread, called "Chewbacca", started by Dougie Fett. You should go read it, it's really cool! He even made himself taller: he's 5' 11" outside the costume, and 7' 1" in it!