There are other things out there besides cork.
What difference does bar diameter have to do with what wrap you use?
I'm just saying that along with the other things, it just seems like he's "trying" to be ghetto... like those "anarcho punks" that live in rich neighborhoods, and get dropped off at shows by their parents in their benz SUV. If you can spend 350 bucks on a new bike, you should have been able to put some clamp on fenders on your old bike.