Do they make shoe bags for racking?
 

Sometimes I run or workout when I get to work. In an effort to keep my load to a single, not overstuffed pannier, I usually bungee my running shoes/cross trainers to the top of my rack. I suspect those of you who don't keep dress shoes in the office do the same with those shoes.

On rainy days I use grocery bags to keep shoes dry. I'm looking for a more permanent solution. I basically want some waterproof shoe bags. They'd look like those felt bags you get if you buy a nicer pair of shoes (e.g., Allen Edmonds). Ideally they would have fabric hooks to run a bungee through. In the end, I'd use these basically everyday to protect the shoes from all the elements.

Any ideas?
Alternatively, if I made these myself, what type of fabric should I buy?

http://www.drugstore.com/qxp150834_3...ags_gallon.htm

If you make these yourself, you could just use the "kitty litter box" pannier solution. That should protect them from the elements, and it's pretty much free.

They sell "drybags" in various sizes for kayaking, and I'm sure you can find a size just right for your shoes.
However, they may not have the hooks your looking for.