Here's Duncan sporting his spiffy Firstgear Kilimanjaro jacket. It looks good, I must say. :) You can get one yourself right here if you're rich.
This is the basic $20 Fox Head t-shirt. As you can see, I couldn't find exactly the same thing, but this logo comes in more colors and styles than you can shake a stick at anyway... Check 'em all out here. Or you can sign up for a free catalogue here.
Incidentally, that happy-looking fan next to Duncan is wearing a size medium t-shirt by High Sierra-- $8.95 at Mervyn's. Don't ask me how I know that. Top secret investigative techniques.