The Scrappy Simpson Document Wallet is superbly Wonky, wonderfully unique, totally tough AND it's actually very good for storing documents in too !
I use mine whenever I travel. I also use one to store all of my AWB Co documents in. 
They're made from all of those little bits of sail material which  are swept up at the end of the day and would otherwise go into land fill.
If you would like a special 'thing' included in your wallet such as a swim hat or event number, let me know, send it to me and I will sew it in between the clear front sheet and the sail backing. No extra cost.