cats!!
But seriously, just look for a cover that has a good amount of thickness to it. I've found Wolf covers to be nice and half decently priced. There are a bunch of quality covers on the market and it pretty much comes down to what you want to spend. Just as another tip, keep your windows closed when you park your car, even if your just home for an hour or so. The cat next door tried to jump in my car but missed and scrached the clear coat on the driver's side door. I found him to be a perfect canidate for my cat relocation program.





