How do I Clone a USB boot drive with Lion

So, I was able to successfully create a USB flash drive with lion.

Now, I want to keep a backup of that USB drive, because I lose USB drives constantly (and yet I keep purchasing tiny USB Drives).

Anyway, can I simply copy/paste all the data from one drive to another?
I figured it may be a bit more complicated since it's a boot drive and all that.
Is there a special way or a clone software needed to do this properly?

Thanks.

 

Thanks for the quick reply.
Going to try that out.

edit: I should add, I'm new to Mac, so this may have been a newbie question.

 

Excellent, that's even better.
Thanks. I'll give that a shot.