These are the Transformer trucker hats with masks available from Stylin' Online ($22). You can choose between an Autobot hat with Optimus Prime mask or Decepticon hat with Megatron mask. If you're buying one to rob a bank though I suggest going with Optimus so security won't be tipped off so quickly. You walk into a bank with a Deception mask on and THE JIG IS UP. The only transforming and rolling out you're gonna be doing is on a stretcher.
Keep going for a shot of the Decepticon one, then buy them both for my birthday.